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Stells [14]
3 years ago
9

Why do ecosystems need a constant input of energy from an external source

Biology
1 answer:
Alja [10]3 years ago
3 0
The producers need energy to sustain life and sustain an ecosystem.
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A selectively permeable membrane separates two solutions. Water is able to pass through this membrane; however, sucrose (a disac
NNADVOKAT [17]

Answer:

a. Nothing happens because the two solutions are isotonic to one another.

Explanation:

Two solutions of the same molarity are separated from each other by a membrane that allows water molecules but not the glucose or sucrose to move across it. Movement of water across the selectively permeable membrane occurs only when two solutions have different concentrations of solutes. In that case, water moves from a hypotonic solution towards a hypertonic solution. Since both sucrose and glucose solutions have the same tonicity, there would not be any change in the solution.

3 0
3 years ago
2- What are the primary sources of ionizing radiation ? Give examples of each
salantis [7]

Answer:

Ionizing radiation comes from these main sources:

Nuclear reactions in the Earth's sun and stars in space.

Radioactive decay in the body's tissues and in the soil.

Radioactive decay of unstable elements in rocks, especially rocks that contain radium and release radon gas.

Other examples of ionizing radiation include alpha, beta, and gamma rays from radioactive decay.

5 0
3 years ago
I need help on question 16 for quiz 3.2
Elena-2011 [213]

Answer:

what

Explanation:

3 0
3 years ago
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The snowshoe rabbit has unusually large hind feet. This adaptation helps the snowshoe rabbit A) move quickly. B) fight off preda
pav-90 [236]

Answer: <u>Option C, stay on the top of the snow </u>

Explanation: Animals have physical features which help them survive in their habitats, protect them from predators and even face adverse weather conditions. Some adaptations are according to the easy movement of the animals. For example- snowshoe rabbits have bigger feet so that they can jump on the top of the snow without digging into it.

6 0
3 years ago
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Are there multiple types of bacterial colonies in anna’s sample? yes or no. explain your reasoning.
aalyn [17]
There are no various sorts of bacterial provinces in Anna's example. Just Serratia marcescens was discovered in light of the fact that the microorganisms in the specimen all had a similar shape and size. Microbiologists need to detach bacterial provinces from an example to have the capacity to take a gander at what sorts of microscopic organisms are in the example.
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3 years ago
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