what was used successfully by knipling and bushland to sterilize male screwworms? radioactive elements cowboys ddt sentinel goats

Farming up of food web reduces the amount of fish to eat due to the cultivation of higher tropic levels.

The presence of higher tropic levels leads to the consumption of the existing fish in the aquatic ecosystem. Leveling up of trophic levels requires a higher amount of organic matter which will lead to the depletion of fish living in the ecosystem. This process ultimately leads to a reduction in the total amount of fish to eat.

A food web is a combination of all the food chains in the ecosystem. Every organism has its place in the food web in the form of a trophic level. It starts with minimum energy and goes on to a higher tropic level with maximum energy.

Learn more about the food web from the given link.

https://brainly.com/question/2233704

Answer:

We ought to get up. Nobody should go to school fear or worry about the bully waiting at school or at the bus stop to tell you what to do every day. People do not want to be harmful and disturbed. Bully only lives every day by pressure on children. Children probably didn't go to school and do home school they didn't want to do. What that means, can't teachers or friends with those children who do not want to go to home school. Bully could result in school shots or other suicidal children as a result of the bully they've been hurt. You should not let anyone suffer and watch how someone else places him or her every day in physical or psychological pain.

Explanation:

Answer:

It is important to stand up to bullying for a number of reasons. You may think it's better to not get involved but staying neutral always helps the oppressor. You should not let someone suffer and watch as someone else puts them in physical or psychological pain every day, it is good to stand up for what is right. You may even make a life-long best friend. So stand up for what's right and don't stay neutral so the oppressor can continue to victimize someone.

We ought to get up. Nobody should go to school fear or worry about the bully waiting at school or at the bus stop to tell you what to do every day. People do not want to be harmful and disturbed. Bully only lives every day by pressure on children. Children probably didn't go to school and do home school they didn't want to do. What that means, can't teachers or friends with those children who do not want to go to home school. Bully could result in school shots or other suicidal children as a result of the bully they've been hurt. You should not let anyone suffer and watch how someone else places him or her every day in physical or psychological pain.

Explanation:

Answer:

geographical, environment, determines, growth

Explanation:

HELP I HAVE TO UNSCRAMBLE PLEASEE located within the boundaries of a GEOGRAPHICAL region 4. A limited resources is a factor present in an ENVIRONMENT that DETERMINES the types, number and GROWTH of a population of organisms in an...

There are 1,000 cubic millimeters (mm³) in 1 cubic centimeter (cm³). This is because 1 cm is equal to 10 mm, and when you calculate the volume of a cube, you raise the length of each side to the power of 3.

To determine the number of nematodes in your mm² of soil, you need to count them under the microscope. Let's say you counted 10 nematodes in your mm².

To calculate the number of nematodes per cubic millimeter (mm³) of soil, you need to know the depth of the soil you examined. If you used 2 mm of soil, the calculation would be: (Number of nematodes in mm²) / (Volume of soil in mm³) = 10 nematodes / (2 mm x 1 mm x 1 mm) = 10 nematodes / 2 mm³ = 5 nematodes per mm³.

To calculate the number of nematodes in a cubic centimeter (cm³) of soil, you would use the same ratio of nematodes per mm³. Since there are 1,000 mm³ in 1 cm³, the calculation would be: (Number of nematodes per mm³) x (1,000 mm³) = 5 nematodes/mm³ x 1,000 mm³ = 5,000 nematodes per cm³.

To calculate the number of nematodes in a cubic meter (m³) of soil, you would again use the same ratio. Since there are 1,000,000 cm³ in 1 m³, the calculation would be: (Number of nematodes per cm³) x (1,000,000 cm³) = 5,000 nematodes/cm³ x 1,000,000 cm³ = 5,000,000,000 nematodes per m³.

learn more about nematodes here:

https://brainly.com/question/9575693

#SPJ11

The correct answer for this question is 30;19

What are psychological disturbances?

The presence of a psychological disorder is signaled by significant disturbances in thoughts, feelings, and behaviors; these disturbances must reflect some kind of dysfunction (biological, psychological, or developmental), must cause significant impairment in one's life

What are the causes of Psychological Disturbances.

challenges in life that are stressful, such having money issues, losing a loved one, or getting divorced. a persistent (chronic) illness, like diabetes. damage to the brain caused by a severe insult (traumatic brain injury), like a concussion.

The complete question is:

In any given year, as many as _____ percent of the adults and _____ percent of the children and adolescents in the United States display serious psychological disturbances and are in need of clinical treatment.

10; 19

40; 19

30; 19

20; 19

To know more about Psychological Disturbances, click here:

https://brainly.com/question/25594619

#SPJ4

The bloom times of the flowers also coincide with hummingbirds' breeding seasons. This is an example of mutualistic relationship.

Hummingbirds and bird-pollinated flowers have developed a mutualistic relationship over time, proving their intertwined dependence on one another. Hummingbirds rely on the flowers’ nectar for nutrition and the flowers rely on the birds to pollinate them.

To promote this relationship, the flowers have evolved characteristics that suite the birds’ vision, diet, and bills. The flower’s bright colors and unique shapes fit the necessary criteria of distinct hummingbird species. Additionally, the blooming times of the flowers coincide with the hummingbirds’ breeding seasons, allowing adequate time for both entities to benefit from the exchange.

Due to this successful relationship, the hummingbirds get the energy they need to fly, pollinate the flowers, and fly away with the pollen of the flower on their heads and bills, in turn providing the flowers with the opportunity to reproduce. Such eco-dynamic relationships are a proof of nature’s undeniable interconnectivity.

know more about nectar here

https://brainly.com/question/29147998#

#SPJ11

Scientists believe that the current global warming situation is not caused by natural forces due to the sheer magnitude and speed of the warming.

In the past, natural climate events, such as the Medieval Warm Period and the Little Ice Age, have caused climate changes but these climate changes have been much slower than the current global warming trend. Natural climate events also tend to be more regional in nature, while current global warming is observed across the entire globe.

Furthermore, the current rate of global warming is much faster than any natural climate event in recorded history. This is largely due to the emission of large amounts of greenhouse gases, such as carbon dioxide and methane, by human activities.

Scientists have identified a clear correlation between the increasing levels of these human-emitted gases and the rising global temperatures.Therefore, according to the majority of experts, human actions are mostly to blame for the current state of global warming.

Learn more about global warming visit:

https://brainly.com/question/3223175

#SPJ4

Understanding fundamental physics, comparing observations to models, and identifying the specific patterns of climate change brought on by various human and natural variables have all helped scientists conclude that modern climate change is mostly the result of human activity.

In-depth analyses of the effects of the documented rise in atmospheric greenhouse gases on Earth's energy balance are compatible with the known rise in global surface temperature since 1900.

Climate records provide varied traces of various climate impacts. It is clear from both this basic knowledge of the physics of greenhouse gases and pattern-based fingerprint investigations that natural factors alone are unable to account for the recent observed changes in climate.

Natural factors include internal climate system changes, variations in the Sun's output, and variations in Earth's orbit around the Sun.

Learn more about Greenhouse gases:

https://brainly.com/question/29695862

#SPJ4

There are many other factors which may have an impace on the distribution of a species, even within the same climate. These include biotic factors, such as the availability of food and the presence of competing species, or the prevalence of diseases or parasites.

Potential predators may also expand or limit their range. Abiotic factors, such as the availability of shelter or sources of water, temperature variation and soil characteristics will also influence a species range.

Finally, human-related factors, including land-use changes, pollution or predation by humans can also alter a species range. The cumulative effect of these factors is extremely hard to predict, however, it is likely to be greater than the effect of climate change alone.

know more about species here

https://brainly.com/question/9506161#

#SPJ11

The allotetraploid would have 10 + 12 = 22 chromosomes in its set, and being tetraploid, it would have a total of 4n = 4 x 22 = 88 chromosomes.

If species i has 2=102n=10 chromosomes and species ii has 2=12.2n=12 chromosomes, then the allotetraploid (which is a hybrid of these two species) would have a total of 2n = 2(10+12) = 44 chromosomes. Since it is an allotetraploid, it would have two complete sets of chromosomes from each of its parent species, resulting in a total of 4 sets of chromosomes or a tetraploid.

To know more about allotetraploid visit:

https://brainly.com/question/31079372

#SPJ11

Answer:

The ground where the coal was mined is acidic so few plants can grow there.

Explanation:

Usually, the ground surrounding the coal that is mined has a low pH.

Took the quiz ;)

Answer:

As an organism develops, cells differentiate to form different types of cells. Most types of animal cell differentiate at an early stage. Many types of plant cells retain the ability to differentiate throughout life. In mature animals, cell division is mainly restricted to repair and replacement.

Explanation:

''.''

In mature animals cells differentiate during : Repair and replacement of  animal cells

Cells differentiate in organisms and plants to create more cell types, as the organism and plants continue to mature. While cell differentiation in animals occur mostly before maturity, plants cells continue to differentiate until they die.

While in mature animals, cells differentiates at maturity only when the cells of the mature animal needs repair or replacement due to damage caused to the a cell or tissue.

Hence we can conclude that in mature animals cells differentiate during repair and replacement of cells.

Learn more : https://brainly.com/question/19015367

Lymph, tissue fluid, and plasma are all fluids that exist in the body, but they differ in their location and composition.

Lymph is a clear fluid that circulates through the lymphatic system. It is formed when tissue fluid enters the lymphatic vessels and is transported through the lymphatic vessels and lymph nodes. Lymph contains immune cells and waste products and is important for the immune system.

Tissue fluid is a fluid that surrounds the cells in tissues. It is formed when blood plasma filters out of the capillaries and into the spaces between cells. Tissue fluid supplies nutrients and oxygen to the cells and removes waste products.

Plasma is the liquid part of the blood. It contains water, electrolytes, proteins, hormones, and waste products. Plasma carries nutrients, hormones, and waste products to and from the cells and tissues in the body.

In summary, lymph is a fluid that circulates through the lymphatic system, tissue fluid is a fluid that surrounds the cells in tissues, and plasma is the liquid part of the blood that carries nutrients, hormones, and waste products to and from the cells and tissues in the body.

To diagnose medical disorders, radiography uses X-rays to take a single image of the bodily tissues. A specific sort of radiography used on the breasts is called mammography. It is utilised for breast cancer screening.

The type of imaging test utilised and the area of the body being examined determine how much radiation is exposed during an imaging test. For illustration: The patient is exposed to around 0.1 mSv during a single chest x-ray. This is roughly equivalent to the radiation exposure that people experience over the course of about 10 days when exposed naturally.

X-rays (including dental, chest, and spine x-rays), CT or CAT (computed tomography) scans, and fluoroscopy are a few typical examples of imaging exams.

To know more about radiography

https://brainly.com/question/29727230

#SPJ4

May increase the risk of a cancer occurring later in life patients who receive multiple examinations using ionizing radiation such as diagnostic x-rays ct and fluoroscopy.

CT scans normally require extra exposure to radiation than common x-rays because they use a chain of x-ray pictures. expanded exposure means a barely higher risk of feasible short-term and long-term health results.

up to now, there may be no evidence of genetically heritable chance in human beings from exposure to x-rays. below a few rare circumstances of extended, high-dose exposure, x-rays can purpose other damaging health effects, along with pores and skin erythema (reddening), skin tissue injury, and start defects following in-utero exposure. Fluoroscopy tests can assist diagnose esophageal issues, ulcers, hiatal hernia, GERD (gastroesophageal reflux ailment), structural problems inside the GI tract and tumors.

To know more about x-rays click here

https://brainly.com/question/24505239

#SPJ4

Answer:

si ir Jesús money and finace and You Aldo wnat yo put they mitos because ir si the top one

Explanation:

hope ir hemos

Answer: Biomagnification refers to the process by which the concentration of a contaminant increases as you move to higher trophic levels in a food chain or food web. In other words, as organisms consume other organisms, the contaminants present in the prey accumulate and become more concentrated in the bodies of the predators.

To understand this process, let's consider an example involving a water ecosystem. Suppose a pollutant is released into the water, such as a pesticide or heavy metal. The primary producers, such as algae or aquatic plants, absorb small amounts of the contaminant from the water. As herbivorous organisms consume these primary producers, they ingest the contaminants along with their food.

Since the contaminant is not easily broken down or eliminated from the organisms' bodies, it accumulates over time. As a result, the concentration of the contaminant becomes higher in the herbivores than in the primary producers. Now, when carnivorous organisms consume the herbivores, they not only accumulate the contaminant from their own food but also from all the prey they have consumed. This leads to an even higher concentration of the contaminant in the carnivores.

Therefore, biomagnification describes the phenomenon where the concentration of a contaminant increases significantly as you move up the food chain or trophic levels. The highest concentration of contaminants is often found in top predators, such as large fish, birds of prey, or mammals, which can have adverse effects on their health and reproductive capabilities.

It's important to note that biomagnification primarily occurs for persistent and non-biodegradable contaminants that cannot be easily metabolized or excreted by organisms. These contaminants are often lipophilic (fat-soluble), which allows them to accumulate in fatty tissues and remain in the organism's body for long periods, leading to biomagnification.

Explanation:

"A tough protective covering on spores" is the correct answer option A, Option B, C, D, and E are not accurate descriptions of sporopolylenin.

Sporopolylenin is a tough, resistant biopolymer that forms a protective covering on the outer surface of spores. It is commonly found in various plant species, particularly in pollen grains. Sporopolylenin provides durability and protection to spores against environmental stresses, such as desiccation, UV radiation, and microbial degradation, allowing them to survive harsh conditions and remain viable for dispersal and germination.

Therefore, option A - "A tough protective covering on spores" is the correct answer.

Learn more about “  sporopolylenin. “ visit here;

https://brainly.com/question/1543124

#SPJ4

Complete Question-

What is sporopolylenin?

A. A tough protective covering on spores.

B. Pollen that is produced by a sporophyte.

C. The conversion of pollen to spores.

D. A capsule housing pollen.

E. Food stored in pollen for the growing embryo.

Answer:

When you manually crank the flashlight, a coil of wire inside the generator converts the mechanical energy into electrical energy. This allows an electrical current to flow through the flashlight, thus lighting the bulb of the flashlight.

Answer:

It's called thermal energy. The energy that comes from the temperature of the heated essence is called thermal energy.

Explanation:

:) Hope this answer helped.

Answer:

The correct answer is D. Use local resources to make food products.

Explanation:

Here is an explanation of why the other options are incorrect:

A. Throw away food that is out-of-season. This is a wasteful practice that will increase food costs. It is better to donate food that is out-of-season to food banks or other organizations that help people in need.

B. Distribute local food to places around the world. This is a costly and inefficient practice. It is better to use local resources to make food products that can be sold locally.

C. Increase the number of diesel-powered trucks to transport food. This is a harmful practice that will increase emissions and contribute to climate change. It is better to use electric trucks or other sustainable transportation methods to transport food.

D.Using local resources to make food products is a sustainable and cost-effective practice that can help to reduce food costs and waste. It is a good way to support local farmers and businesses, and it can help to reduce the environmental impact of food production.

Explanation:

1 . a multilateral system of trading in which a country pays for its imports from one country by its exports to another.

2 . British slave traders

3 . British slave traders

Answer:

Fish have gills they breathe under water

If a space shuttle is returning from space and entering earth's atmosphere, then the order of layers of the atmosphere that the space shuttle will pass  is troposphere, stratosphere, mesosphere, ionosphere.

The atmosphere is divided into five layers depending on the distance from earth. The atmospheric layer nearest to the earth is troposphere and then stratosphere on which ozone is present.

Each atmospheric layer differs in the presence of gases, temperature and pressure. Jet aircrafts fly in the stratosphere as it is very stable. Ozone layer absorbs harmful rays from the Sun.

Meteors burn up in the mesosphere. The thermosphere is a layer with auroras and space shuttle orbits here.

To know more about atmosphere, refer

https://brainly.com/question/28124272

#SPJ4

Answer:An active site can catalyse a reaction repeatedly as residues are not altered at the end of the reaction (they may change during the reaction, but are regenerated by the end). This process is achieved by lowering the activation energy of the reaction, so more substrates have enough energy to undergo reaction.

Explanation: hope this helps :)

Answer:

The organism most reliant on other organisms for reproduction is a parasite. Parasites rely on other organisms, such as their host, for reproduction as they lack the necessary reproductive organs. They must rely on the reproductive organs of their hosts in order to reproduce. Additionally, parasites may rely on natural processes such as environmental conditions in order to reproduce.

Answer:

sexual reproducers

Explanation:

season, and where other organisms are

Research suggests that following a plant-based diet can support a healthier body weight and reduce the risk of weight problems. This is important because numerous studies have indicated that vegetarians may have better overall health compared to meat eaters.

1. Plant-based diets typically consist of fruits, vegetables, whole grains, legumes, nuts, and seeds, which are generally lower in calories and higher in fiber compared to animal-based foods. This means that individuals following a plant-based diet may consume fewer calories while still feeling full and satisfied.

2. Plant-based diets are often associated with a lower body mass index (BMI), which is a measure of body weight in relation to height. Studies have found that vegetarians tend to have lower BMIs and lower body fat percentages compared to meat eaters. This is partly because plant-based diets are naturally lower in saturated fat and cholesterol, which are commonly found in animal products and can contribute to weight gain.

3. Plant-based diets can also help regulate blood sugar levels, which is crucial for maintaining a healthy weight. Since plant-based foods are generally low on the glycemic index, they cause a slower and steadier release of glucose into the bloodstream. This can help prevent sudden spikes and crashes in blood sugar, reducing the likelihood of overeating and promoting a more stable energy level throughout the day.

4. Furthermore, plant-based diets are rich in vitamins, minerals, antioxidants, and phytochemicals that can support overall health and prevent chronic diseases. This can contribute to a healthier body weight in the long run.

research suggests that following a plant-based diet can help support a healthier body weight and reduce the risk of weight problems. The lower calorie content, higher fiber intake, and beneficial nutrients found in plant-based foods may contribute to these positive effects. However, it is important to note that individual dietary choices and overall lifestyle factors also play a significant role in maintaining a healthy weight.

To know more about higher visit:

https://brainly.com/question/32045372

#SPJ11

Answer:

A)The first humans moved around a lot looking for food.

Explanation:

just took test

The true statement about how early humans met their needs is : ( A ) The first humans moved around alot looking for food .

In order to survive early humans moved around like nomads in search of food and shelter most of the times because there was no formal or mechanized way of cultivating agricultural products for food.

As humans continued to advance in knowledge they started farming and rearing of animals but these were not done by early humans.

Hence we can conclude that The true statement about how early humans met their needs is : ( A ) The first humans moved around alot looking for food .

Learn more about Early humans : https://brainly.com/question/5604524

#SPJ2