What is the original source of all energy in a food web?



environmental science own words pls i need it

The Option B is correct. The body blan  have the assymetry types of sponges in them

Sponges (Phylum Porifera) are a type of aquatic animal that lack true tissues and organs. They are considered the simplest of all animals and do not have a body plan based on symmetry.

Instead, sponges exhibit a type of symmetry known as "asymmetry," which means they have no plane of symmetry or any organization of body parts around a central axis. Therefore, the correct answer is B. asymmetry.

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Urban Sprawl leads to reduced habitat and fragmentation. Option D

Natural ecosystems are frequently destroyed and fragmented as a result of urban sprawl. Forests, marshes, and other habitats are destroyed when cities grow to make room for new structures, parking lots, and other infrastructure.

The remaining natural areas become fragmented as a result of habitat loss, isolating populations of plants and animals and interfering with their ecological connectedness. Fragmented ecosystems make it harder for species to migrate, reproduce, and obtain suitable resources, which causes biodiversity to dwindle.

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Answer:

When hemoglobin is deoxygenated (left), the heme group adopts a domed configuration. When hemoglobin is oxygenated (right), the heme group adopts a planar configuration. As shown in the figure, the conformational change in the heme group causes the protein to change its conformation, as well.A

Explanation:

Answer:

True....

Explanation:

Spore, a reproductive cell capable of developing into a new individual without fusion with another reproductive cell. Spores thus differ from gametes, which are reproductive cells that must fuse in pairs in order to give rise to a new individual.

Potometer is the apparatus which was used to investigate how temperature affects transpiration rate.

This is also referred to as transpirometer and it measures the level of water uptake in a leafy shoot.

Increase in temperature will lead to transpiration which can be detected by using the potometer to measure the water level.

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Answer:

subartic/b

Explanation:

I took the test! If Im right please mark brainliest!

Answer:

Yes the answer is b.

Explanation:

I took the unit test to

Answer:

Rockfish larvae are pelagic, there is genetic evidence for limited dispersal within Puget Sound for the quillback and copper (S. caurinus) rockfish (Seeb 1998) as well as for differentiation from coastal populations of brown rockfish (S. auriculatus) (Buonaccorsi et al. 2002). This degree of population structure is consistent with other genetic and otolith studies from coastal Pacific rockfish populations

Answer:

Rockfish larvae are pelagic

Explanation:

The two reasons behind cells can form tumors are:

•Continuous cell division

•Too little cell division

Changes in qualities can cause malignant growth by speeding up cell division rates or restraining typical controls on the framework, for example, cell cycle capture or customized cell passing. As a mass of dangerous cells develops, it can form into a growth.

The reason behind cell can form tumors is because at the point when cells become old or become harmed, they pass on, and new cells have their spot. In some cases this systematic cycle separates, and strange or harmed cells develop and duplicate when they shouldn't. These cells might frame cancers or tumors, which are pieces of tissue.

The factors which responsible for formation of tumors are :

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Answer:

12. C. slight temperature range

13. B. little wind

Explanation:

Grassland biomes do not have a slight temperature range, they have a large one. It could be very hot in the day time but then quite cold at night.

Deserts do not have little winds blowing across them. These winds are usually strong and dry. The sand dunes in deserts were formed by these winds as they pick up sand particles and carry it to another area.

Answer:

The correct answer is - a. DNA primers, and d. DNA polymerase that is heat stable.

Explanation:

In Polymerase chain reaction (PCR) there are many components are required in a overall process but there is two major components that are required for amplification of a specific section of DNA:

a. DNA primers- these are short and strands or sequence of ssDNA, a pair of these sequence acts as the starting site for a new strand which is used to hybridize with the sample DNA and mark the region of the DNA of interest to be amplified.

d. DNA polymerase that is heat stable-  PCR technique involves various reaction that are performed at different temperatures. A thermophilic bacteria Thermus aquaticus is used to get this heat stable enzyme, Which lives in hot springs.

Thus, the correct answer is - a. DNA primers, and d. DNA polymerase that is heat stable.

Roots show geotropism because they grow towards the gravitational pull.Plants that have many periods of reproduction are called perennial plants. Plants tend to grow towards air with higher humidity because of hydrotropism. A potato is an example of a tuber. Plants conduct water and nutrients through their xylem and phloem tissues.The basic requirements for plants to survive are light, water, air, and nutrients. Scientists believe that the first types of cells able to make their own food were the prokaryotic cells.

1. Roots show geotropism because they grow towards the gravitational pull. Geotropism is a plant's response to gravity, and it helps roots grow in the correct direction, which is typically downward. This allows the roots to anchor the plant and absorb water and nutrients from the soil more efficiently.

2. Plants that have many periods of reproduction are called perennial plants. Perennial plants live for more than two years and go through multiple reproductive cycles. Unlike annual plants that complete their life cycle in one year, perennials continue to grow and reproduce for several years.

3. Plants tend to grow towards air with higher humidity because of hydrotropism. Hydrotropism is the response of plants to water. When the air has higher humidity, it means there is more moisture in the air, and plants will grow in that direction to access the water they need for photosynthesis and survival.

4. A potato is an example of a tuber. Tubers are modified stems that store nutrients for the plant. Potatoes are underground stems that store starches and other nutrients, which the plant can use for energy and growth.

5. Plants conduct water and nutrients through their xylem and phloem tissues. The xylem transports water and minerals from the roots to the rest of the plant, while the phloem transports sugars and other organic compounds produced during photosynthesis to other parts of the plant.

6. Potatoes are an example of tubers. Tubers, like potatoes, are underground stems that store nutrients for the plant. They often have buds, called eyes, which can sprout into new plants.

7. The basic requirements for plants to survive are light, water, air, and nutrients. Plants need light for photosynthesis, where they convert sunlight into energy. Water is essential for the transport of nutrients and for maintaining cell turgidity. Air provides carbon dioxide for photosynthesis and oxygen for respiration. Nutrients, such as nitrogen, phosphorus, and potassium, are necessary for plant growth and development.

8. Scientists believe that the first types of cells able to make their own food were the prokaryotic cells. Prokaryotic cells, specifically cyanobacteria, were the earliest organisms capable of photosynthesis. These cells were able to convert sunlight into energy and produce their own food, paving the way for the evolution of more complex organisms.

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Binding of a signalling molecule to a ligand-gated ion channel receptor, that leads directly to a change in the distribution of ions on opposite sides of the membrane.

Ligand-gated ion channels are also generally referred to as ionotropic receptors, and these are a group of transmembrane ion-channel proteins which are open to allow ions such as K⁺, Ca²⁺, Na⁺ , or Cl⁻ to easily pass through the membrane in order to respond to the binding of chemical messengers (neurotransmitter).

In a ligand-gated ion channel, the substances will be distributed from outside to inside (or vice versa, depending on the type of substances). Ligand-gated ion channels that binds neurotransmitters and open in response to the ligand binding.

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Answer:

The correct answer is D.) the curved surface of Earth.

Explanation:

The intensity of sunlight on Earth is affected by the curved surface of Earth, which causes the sunlight to spread out over a larger area. As a result, the intensity of sunlight is less at any given point on Earth's surface than it would be if Earth had a flat surface. This also explains why the poles receive less sunlight than the equator, as sunlight is spread out over a larger area near the poles due to the curvature of the Earth.

Factors such as the mass of Earth, the speed of Earth, and the number of rotations of Earth do not directly affect the intensity of sunlight on Earth.

Answer:

IV The cell is the basic unit of structure in all organisms

Explanation:

the principle of segregation

the principle of independent assortment

Answer:

I think it's option C. Organic

A scanning electron microscope would be the best choice to look at the wings of two different butterflies and determine which one is a Monarch Butterfly and which one is a Viceroy Butterfly.

An electron microscope called a scanning electron microscope (SEM) scans a sample's surface with a concentrated stream of electrons to create pictures of the material. As the electrons contact with the sample's atoms, different signals emerge that provide details about the sample's surface topography and composition.

A raster scan pattern is used to scan the electron beam, and a picture is created by combining the detected signal's strength with the beam's position. Using a secondary electron detector, the most popular SEM mode detects secondary electrons released by atoms stimulated by the electron beam (Everhart–Thornley detector).

The specimen topography affects, among other things, the quantity of secondary electrons that may be detected and, consequently, the signal intensity.

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Answer:

50%

Explanation:

its a chance but not likely

because its not dominant

Answer:

carnivorous.

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thanks

Answer:

antibodies are produced in response to infection and that these antibodies are designed to specifically target particular antigens and bind tightly to them.

Answer:

The relationship between an organism and its environment is a two-way interaction, and both factors affect each other.

On one hand, the environment can have a significant impact on the development, behavior, and survival of an organism. The environment can influence factors such as an organism's access to resources, exposure to predators, and exposure to weather and climate. For example, if there is a drought in an area, it may become more difficult for a plant to obtain water and other necessary nutrients for survival.

On the other hand, organisms can also affect their environment. For example, plants can change the chemical composition of soil, and animals can modify habitats through their behavior or by physically changing the environment through activities such as digging or building nests.

Ultimately, the relationship between an organism and its environment is complex and dynamic, with both factors having an impact on each other in various ways. This interaction is often referred to as an ecological or environmental feedback loop, where changes in one factor can lead to changes in the other factor, creating a cyclical relationshi

Explanation:

Answer:

Explanation:

The relationship between an organism and the environment is dynamic and reciprocal, and both of them influence each other. Organisms can have impact on environment. For example, animals can modify the landscape through the burrowing or grazing activity, and plants can alter the chemistry of the soil through their root system.Humans affect the environment at the greater extent through activities such as pollution, deforestration and burning of fossil fuel.

environment also effects the organism in various ways such as changing climate and weather conditions ,temperature, availability of nutrients etc.Environmental pressure can also lead to the evolution of new traits in a population over time, as individuals with certain advantageous traits are more likely to survive and reproduce.

ITS WATER I SWEAR

H20 has multiple elements in it so its a compound the others are just single elements

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Epithelium is a single layer of elongated cells with nuclei typically positioned near the basement membrane.

Epithelium is a tissue composed of a single layer of elongated (tall) cells. In this type of tissue, the nuclei of the cells are usually found at approximately the same level, near the basement membrane. The basement membrane is a thin, specialized extracellular matrix that separates the epithelial tissue from the underlying connective tissue.

Epithelial tissue serves various functions in the body, depending on its location. It lines the surfaces of organs, blood vessels, and body cavities, forming barriers that protect underlying tissues from mechanical damage, pathogens, and chemical substances. Epithelium also plays a role in absorption, secretion, and sensory reception.

The arrangement of cells in a single layer with nuclei at a similar level near the basement membrane allows for efficient exchange of substances across the tissue. This organization ensures that all cells have access to nutrients and oxygen from the underlying tissues and facilitates the transportation of waste products and secretions.

Overall, epithelium is a crucial tissue in the body due to its protective, absorptive, and secretory functions. Its structure with elongated cells and nuclei positioned near the basement membrane enhances its functionality in maintaining tissue integrity and performing specialized tasks throughout the body.

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The population that is slightly more of a specialist in its diet would be Population A.

In ecology, a specialist is an organism that has a narrow diet and can only thrive under specific conditions, while a generalist can survive on a wide variety of food sources and environmental conditions.

The passage suggests that both populations have similar characteristics but one is "slightly more of a specialist in its diet." Therefore, Population A must have a narrower and more specific diet than Population B, making it the specialist population.

It's important to note that the passage does not provide explicit information on the diets of either population, nor does it define what "slightly more of a specialist" means in terms of the percentage of the diet that is specialized.

However, based on the given information, we can infer that Population A is more specialized than Population B, albeit only slightly.

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Complete question:

The two populations are similar, but one is slightly more of a specialist in its diet, whereas the other is more of a generalist. Which population is more of a specialist?  Answer the result from graph shown below

O Population B

O Population A

The statement "a series of gradual changes that occur after a disturbance" describes the ecological concept of succession.

Succession refers to the process of change in the species composition and structure of an ecological community over time, following a disturbance or the colonization of a new habitat.

There are two main types of succession: primary succession and secondary succession. Primary succession occurs in areas where there is no soil, such as after a volcanic eruption or glacial retreat, and involves the gradual development of soil and establishment of new plant and animal communities. Secondary succession occurs in areas where there is already soil, such as after a wildfire or agricultural abandonment, and involves the re-establishment of plant and animal communities.

In both types of succession, there is a gradual change in species composition, with early successional species being replaced by later successional species that are better adapted to the changing environmental conditions. This process continues until a stable, climax community is reached, which is the endpoint of succession in a given ecosystem.

Therefore, to summarize, the statement "a series of gradual changes that occur after a disturbance" describes the ecological concept of succession, which is the process of change in the species composition and structure of an ecological community over time, following a disturbance or the colonization of a new habitat.

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Expalin

Is a series of gradual changes that occur after a disturbance

Answer:

Porque en estas especies la fase dominante es el gametofito (haploide)

Explanation:

El ciclo de vida de las plantas superiores se caracteriza por la alternancia de generaciones, es decir por un ciclo de vida compuesto por una fase de reproducción sexual que da lugar a una generación diploide (2n), seguida por una fase de reproducción asexual que da lugar a una generación haploide (n). La fase diploide es conocida como generación esporofítica, una fase caracterizada por la formación de un cigoto diploide (2n) y producción de esporas por meiosis, mientras que la fase haploide es conocida como la generación gametofítica la cual da lugar a los gametos haploides. En plantas terrestres no vasculares (como por ej. musgos y helechos), la fase dominante es el gametofito haploide, el cual es fotosintético y autosuficiente. Por otra parte, en plantas con semillas (gimnospermas y angiospermas), la generación esporofítica es la dominante, siendo el gametofito muy reducido y dependiente del esporofito para nutrirse.

1) According to the diagram, divergence among mammals took place about 75 mya.

2) Scientists are able to determine common ancestors by studying molecular data.

3) Darwin's theory of evolution by natural selection states that animals change over long periods of time.

4) Scientists are closesly studing how genes reorganize themselves.

5) Some scientists, however, think new species evolve quickly.

6) Still, among scientists, the principles of natural selection remain unchanged and highlight how animals evolve.

7) The main tool for the study of evolution is careful observation of fossils and the anatomy of animals.

8) Scientists also study animal embryology.

9) What no one doubts is the wide diversity among organisms on Earth.

10) The divergence that took place among mammals helps us understand why whales and dolphins are mammals and not fish.

Fun fact: Uh, I happen to discover a whole packet of answer keys, not just for this but also for other assignments and stuff. (O.O)