Some people think hydropower should be used supply all of the electricity for the United States. Which of the following statements describes a flaw in this plan?
A. Wind power causes too much pollution
B. Wind cannot used to generate electricity
C. Wind power can be used only in certain areas
D. Wind power contributes to climate change

Changing the pendulum design after the first trial was an example of evaluating the model to solve the problem presented by the teacher. So, the correct option is B.

A weight suspended from a fixed position in such a way that it can swing back and forth when pulled by gravity is called a pendulum. The consistent and predictable swinging motion of a pendulum makes it useful for many tasks, such as timekeeping, physics investigation, and engineering design.

In the example above, Ben and Sam analyzed their initial pendulum design after the first try and found that it could only move a wooden block about 1.5 meters. He decided that he needed to modify his design. After making adjustments to the mass of the bob, he rebuilt his pendulum. They were able to knock the wooden block over a distance of 4 m, 6 m and finally 8 m after making these adjustments with an average distance of 6 m.

Consequently, changing the pendulum design after initial testing was an example of evaluating the model and improving it as a result of the evaluation findings.

So, the correct option is B.

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Answer:

The sun

Explanation:

The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs.

Answer:

The given question is incomplete however the correct question and the flow chart is related to the question as follows:

The flowchart below shows the three generations of a cross between a pea plant that has yellow pods and a pea plant that has green pods. yellow pods are the dominant trait. The flowchart is missing the labels that describe the traits.

In which squares should the phrase “yellow pods” appear?

1. A and D

2.B and E

3. A, C, and D

4. A, B, C, D, and E

Answer:

The correct answer is: 3. A, C, and D

Explanation:

According to Mendel’s laws of inheritance, when a plant with the dominant trait is crossed with a plant with a recessive trait, as a result, the dominant phenotype appears in all the F1 offspring. On Self cross F1 offspring, produces F2 offspring with dominant and recessive traits.

In the given scenario, pea plant with ‘yellow pods’ are dominant and pea plant with ‘green pods’ is recessive.

Therefore, when pea plant with yellow pods is crossed with the pea plant with the green pod, the F1 offspring (C) produced are with yellow pods.

Thus, parent (A) is with yellow pods and F2 offspring (D) is with yellow pods.        

Answer:

B). a river

Explanation:

An ecosystem is where a geographical location holds plants and animals that work together to create a sustainable way of living. Obviously organisms nor plants are going to live on the sun or your body so the only logical answer is "a river" since you have water plants and creatures.

Best of Luck!

Answer:

3900

Explanation:

100 meters x 39 worms per meter = 3900 worms per square meter :)

Answer:

next friday

Explanation:

qwertyuiop

Answer:

I would hope not! I hope you get something far better off than a 10, good luck.

Answer:

2.87

Explanation:

10x (10*7)

20x/7

2.87

Answer:

mitochondria, ribosomes, and vacuoles

Explanation:

chloroplasts and cell walls are only found in plants .

though rare, vacuoles are found in animal cells as well as plants .

mitochondria and ribosomes are in both types of cells .

Answer:

ribosomes

Explanation:

a i think but plant cells

i thibk it is a but its definitely plant cells

Answer:

S - Savannas are typically found in tropical or subtropical regions.

S - Savannas tend to have more trees and shrubs.

S - Savanna's climate is drier than that of a grassland.

G - Grasslands are found in temperature regions.

G - Temperature Grasslands are mainly devoid of trees, receive less rainfall than Savannas & endure broader temperature extremes.

G - Grasslands make up 25 percent of the Earth's land surface and dominate in regions with limited rainfall, which prevents forest growth. This results from nearby mountain ranges that cause rain shadows over adjacent open-range lands.

B - Both represent the world's richest and most diverse ecosystems. They both provide a home for a quarter of the world's population and a habitat for thousands of plants and animals.

B - Many species gather in vast numbers, graze on the varied grasses, and can be found nowhere else on Earth. The coexistence between wildlife and grasses is key to healthy ecosystems. Animal migrations regenerate the landscapes, by controlling pests, dispersing seeds, and trampling invasive species. Through this partnership, grasslands and savannahs generate vital benefits for both people and nature.

B - Ecosystems such as these two in specific are essential for climate mitigation – they store carbon, locking it deep in the soil and extensive root systems. They are the source of or support many of the world’s biggest rivers and wetlands, ensure food security, support livelihoods, and are embedded in the cultural identity of millions of people.

(Also, A savanna or savannah is a mixed woodland-grassland<---similarity)

Explanation: Just research. I decided to state 3 characteristics for both The Savanna and The Grasslands, and then 3 for "B" (both).

Answer:

Absolute magnitude

Explanation:

The apparent magnitude of an object only tells us how bright an object appears from Earth. It does not tell us how bright the object is compared to other objects in the universe. For example, from Earth the planet Venus appears brighter than any star in the sky. However, Venus is really much less bright than stars; it is just very close to us.  

Absolute magnitude should be used instead!

Answer:

Absolute magnitude

Explanation:

The apparent magnitude of an object only tells us how bright an object appears from Earth. It does not tell us how bright the object is compared to other objects in the universe. For example, from Earth the planet Venus appears brighter than any star in the sky. However, Venus is really much less bright than stars; it is just very close to us.  

Answer:

X = 120

Y=  710

Z=   620

Explanation:

The Density of Rocks Part A Nguyen uses a triple beam balance to measure the mass of each rock. Read the values on the balance for rocks X, Y, and Z. Rock Balance Reading of Rock Mass (g) X triple beam part of mass balance with top beam with pointer at 20, middle beam with pointer at 0, and lowest beam with pointer at 1 Y triple beam part of mass balance with top beam with pointer at 10, middle beam with pointer at 0, and lowest beam with pointer at 7 Z triple beam part of mass balance with top beam with pointer at 20, middle beam with pointer at 0, and lowest beam with pointer at 6

Answer:

It should be 450 meters away

I believe the correct alternative is: a) 450 meters

I apologize if this is incorrect. I hope you have a lovely day!

Answer:

sorry i need points to answer a question

Explanation:

Answer: D

Explanation:

The waggle dance is also useful to the practiced foragers who use it for reactivation and confirmation of the food source. Therefore, the dance is useful to all foragers of the colony. Another point to this waggle dance is that a dance site is formed in the nest for the transformation of information.

Answer: Division chlorophyta: Green Algae. Division phaeaphyta: brown algae Division Rhodophyta: red algae

Explanation:

Answer:

. Division chlorophyta: Green Algae

. Division phaeophyta: brown algae

. Division Rhodophyta: red algae

Hope it helps!!

Answer:

competition affect an ecosystem because there has to be an equal amount of prey and consumers. That there's more consumers than prey, all the prey will get eaten up in the ecosystem will eventually die off because there's nothing for the consumers to consume anymore.

From the diagram of the rock cycle the missing part is ( B ) ; Melting

Magma is a hot liquid/semi-liquid rock that is usually formed under the earth due to high pressure and temperature present in the inner core of the earth. magma is obtained by the melting down of existing rocks ( Igneous, sedimentary and metamorphic rocks ) under high pressure and temperature in the earths core.

Magma is released to the earth surfaces during volcanoes therefore the missing term  in the rock cycle is melting

Hence we can conclude that from the diagram of the rock cycle the missing part is Melting.

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Explanation:

How do identical twins happen?

Answer: To form identical or monozygotic twins, one fertilised egg (ovum) splits and develops into two babies with exactly the same genetic information. To form fraternal or dizygotic twins, two eggs (ova) are fertilised by two sperm and produce two genetically unique children.

How do they have the same dna?

Answer: Identical twins (also called monozygotic twins) result from the fertilization of a single egg by a single sperm, with the fertilized egg then splitting into two. Identical twins share the same genomes and are always of the same sex.

Hopefully this helps u out! :)

(image is provided for more details)

Answer:

Changes in species to a animal? rattle snacks and butterflies maybe birds

Explanation:

Answer:

D. The shark applies a non-contact force on the prey.

Reasoning:

Sharks can hear and smell from a far distance. Making it easier to find their prey without touching it.

Answer:

138 bpm

Explanation:

A minute has 60 seconds. You have 23 beats in 10 seconds. You could do a simple multiplication by 6 to get to the 60 seconds you need or you could say:

23 beats .......... 10 seconds

x beats .......... 60 seconds

\(x=\frac{23 * 60}{10}\)

x = 138 bpm

I think you got the point. Desires time is 6 times larger, so is the number of beats.

Answer:

Character is a heritable feature.

Trait is a form of that character.

Explanation:

Answer:

idek

Explanation:

Answer: You're right its b.

Explanation:

Human activity has rapidly increased the emission of greenhouse gases to the atmosphere. Since the start of the Industrial Revolution, in about 1750, human activities such as burning fossil fuels, including coal and oil, have increased greenhouse gas concentrations in our atmosphere.