The scratch test.
The scratch test is used by scientists and people who study rocks and minerals to determine the strength of the rock. They have the scratchers numbered one through ten and scratch the rock or mineral until the scratcher makes a mark in the mineral then they know the strength of the rock.
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The experiment is the procedure performed to prove a hypothesis. The researchers perform an experiment, which can provide data to prove, if the hypothesis suggested is true or not.
After conduction of the experiment several times, the researchers collect all the data and organize it. After organization of the data properly, they analyze the data collected, so that they can formulate, if the hypothesis is true or not.
Hence, the given blank can be filled with Analyze.
The correct answer is D. According to DNA comparisons, humans share a common ancestor with chimpanzees.
Explanation
A scientific statement is a statement made based on scientific evidence, that is, a scientific statement is the result of several tests focused on testing a hypothesis or proposal. These scientific statements can be developed in different areas of knowledge such as science, biology, physics, mathematics, geometry, among others. they are also predominant in the exact sciences because in the human sciences it is complicated to establish scientific statements because human behavior does not obey exact laws. According to this definition, option D. is the correct answer because it refers to DNA tests between humans and chimpanzees and therefore this is based on scientific evidence and tests.
Secondary succession happens more often because it occurs after some kind of distribution that still leaves the soil intact (mudslide,bulldozing,shoveling,or scraping off an area)
