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schepotkina [342]
3 years ago
15

Meredith completed an investigation involving earthworms. She placed a worm on a moist paper towel and carefully marked the posi

tion of the worm on the paper towel. She placed a cardboard box over the worm and paper towel and left it undisturbed for 10 minutes. She removed the box and noted that the worm had not moved from its original position. She then took a flash light and shined it on the worm for 10 minutes. After the end of the 10 minutes she measured the distanced the worm moved in cm. Is this an example of an experiment? Explain.
Biology
2 answers:
ddd [48]3 years ago
7 0

Answer

C) No, it is not an experiment because she compared two situations and had no control group.

Because you should have a control group in order to help determine the true effect.

Rudiy273 years ago
5 0
This is an example of an experiment because a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact is an experiment. She is investigating the movement and analogy between the earthworm using the box and flashlight.
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A major disturbance that the ecosystem was able to recover completely from. ____________________________________________________
icang [17]

Complete Question:

I made the grass diseased. This caused all of the populations above it (rabbit, snake, and hawk) to rapidly decrease over the 12 month period

(a) A major disturbance that the ecosystem was able to recover completely from __________

(b) A major disturbance that caused the ecosystem to stabilize at a new equilibrium ____________

(c) A major disturbance that caused the ecosystem to completely collapse __________

ANSWER:

(a) reducing the hawks to nearly zero

(b) removing all of the hawks

(c) removing all the diseased.

Explanation:

(a) reducing the hawks to nearly zero will cause low depletion of the producer (plants) and this will allow the plant to grow (without visible depletion) over a period of time.

(b) for the ecosystem to stabilize at a new equilibrium, the tertiary consumer (hawks) will be totally removed from the ecosystem. Since there's no tertiary consumer to checkmate the density of other components of the food chain, it will make it form a balanced ecosystem.

(c) for ecosystem to collapse, it's important to note that the removal of the producer (plants) will be bring about the loss of the ecosystem. Since, their is no manufacturer of food, the primary consumer (rabbit) in the food chain will be starved and overtime the rabbits will be wiped out and this will caused the loss of secondary and tertiary consumer in the long run.

ALREADY A BRAINLY

6 0
2 years ago
Look at the table you filled in above. How does the numbers for how much the snakes are consumed compare to how much these preda
S_A_V [24]

The number of organisms decreases on movement from producers to consumers in a food chain. This happens due to decreased energy levels at higher trophic levels.

<h3>What is a food chain?</h3>

Food chain is the sequence of matter and energy transfers as food from one organism to another.

Food chains interconnect locally into a food web as most organisms consume more than one type of animal or plant.

The number of organisms decreases on movement from producers to consumers in a food chain. This happens due to decreased energy levels at higher trophic levels.

Thus, it can be concluded that this is the main reason behind the number of snakes consumed as compared to other organisms.

For more details regarding the food chain, visit:

brainly.com/question/16065961

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