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katrin2010 [14]
3 years ago
7

In a scientific experiment, a __

Biology
1 answer:
salantis [7]3 years ago
8 0
In a scientific experiment, a VARIABLE changed is any factor that can change or be
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What do these four types of molecules have in common? A carbohydrates B proteins C lipids D nucleic acids
Luden [163]

Answer:

biological macro-molecules

Explanation:

4 0
3 years ago
Which of the following is NOT true of
stich3 [128]

They aren't all the same is not true of evolutionary trees.

<h3>What are evolutionary trees?</h3>

Evolutionary trees are trees that help to arrange and reconstruct the evolutionary history of species or groups of organisms belonging to either genera, families, or orders. The trees reconstruct and show case two form of information that is related to evolutionary change, cladogenesis and anagenesis.

Therefore, They aren't all the same is not true of evolutionary trees.

Learn more about evolutionary tress here.

brainly.com/question/2189834

6 0
1 year ago
Hemlocks are a common type of tree in the northern forests of the United States. In studying one forest, a forester noticed that
Vlada [557]

Answer:

b. making an observation and asking a question

Explanation:

In scientific method there need to be a situation to be study. In this description, the scientist first observed that in a certain region there is some kind of trees and the other variable is the great amount of deer.

After making different observations, and some research of other areas similar to the one that is study, she is asking what is the relation among the animals and the trees.

The next step will be to formulate a hypothesis using all the data and the two variables that she observed.

8 0
3 years ago
What developmenta period is marked by sizeable losses in cognitive potential, chronic stress and fertility?
ludmilkaskok [199]
I'm assuming you meant and frailness not fertility, in which case it is the oldest old period
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What purpose does the xylem serve in a plant
andrew11 [14]

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The basic function of xylem is to transport water from roots to stems and leaves but it also transports nutrients

6 0
3 years ago
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