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telo118 [61]
3 years ago
7

Which of the following statements is true?

Biology
1 answer:
Gre4nikov [31]3 years ago
5 0

Answer:

B  Energy only flows in one direct through an ecosystem, while nutrients can be recycled repeatedly

Explanation:

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Why is a protozoan considered animal-like? It is a heterotroph. It is multicellular. It has a flagellum. It has a cell wall.
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Answer:

The answer  was A

It's a Heterotroph

It's means they eat thing outside of themselves instead of producing their own food.

I believe it's correct

Explanation:

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For most terrestrial ecosystems, pyramids composed of species abundances, biomass, and energy are similar in that they have a br
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The correct option is<em> b.  at each step, energy is lost from the system</em>

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This is because most of the energy is lost by the organisms at each trophic level. It is due to the metabolic processes which occur in the organisms of each trophic level  and most of the energy is lost as heat.

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A student wants to know what effect temperature will have on the germination rate of radish seeds.  To test this, she obtains 3
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Answer:

Hypothesis: IF the temperature is high, THEN the germination rate of radish seeds will increase.

Experimental Group: 20 Seeds in petri-dishes placed in the freezer and incubator each

Control Group: 20 seeds stored at room temperature

Manipulated Variable (IV): TEMPERATURE

Responding Variable (DV): GERMINATION RATE

Constants: Amount of water, same amount of time (2 weeks)

Explanation:

- The hypothesis is a testable explanation given to an observed problem. A possible hypothesis is IF the temperature is high, THEN the germination rate of radish seeds will increase.

- Independent or manipulated variable is the variable that is changed or manipulated variable in an experiment. The TEMPERATURE is the independent variable in this case.

- Dependent or responding variable is the variable that is measured in an experiment. In this case, the dependent variable is the GERMINATION RATE

- The experimental group is the group that receives the experimental treatment. In this case, the experimental group is the 20 Seeds in petri-dishes placed in the freezer and incubator each.

- The control group is the group that does not receive the experimental group. In this case, the control group is the 20 seeds stored or placed at room temperature.

- Constants are the variables that are kept unchanged throughout the experiment. In this case, the constants are Amount of water, same amount of time (2 weeks)

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a low red blood count can cause feeling of fatigue and weakness.

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