Question

How did the early people become farmers? 1 point due to climatic change due to changes in plants and animals by observing the stages of plants they began to settle to take care of the plants​

Answer 1

Answer:

Read the description of the experiment, then answer the questions that follow.

a) Is the microbiologist’s hypothesis testable? Why or why not?

A microbiologist studying bacteria hypothesizes that a colony will double

in size overnight if she increases the temperature of their surroundings

by 10 C from 25 C to 35 C.

She increases the temperature before leaving for the day and checks the

colony the next morning. She observes that the size of the colony is the

same size as it was the day before, despite the change in temperature.

o o o

b) Which variable is being tested (independent variable) in this experiment?

c) Which variable is being measured (dependent variable) in this experiment?

d) Is this a controlled experiment? If it is, explain how. If not, describe how to modify the

experiment so that it is a controlled experiment.

e) Identify three variables that must remain constant throughout the experiment.

f) Suggest another improvement that this researcher should implement to improve the

experiment.

g) Suppose that this researcher made the necessary improvements to her experiment, yet

the bacterial colony remained its original size. Does this mean that her experiment is a

failure? Explain your answer.

Explanation:

Answer 2

Answer:

12

Explanation:

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