<span>Controlled experiment is an experiment done under controlled conditions in which only one variable at a time is changed in order to isolate the results. An alternative to a controlled experiment would be a correlation study. A correlation study is a research method in which two variables are compared (what are the similarities and the difference between them). So, correlation study is a type of controlled experiment in which ove variable is changed and the dependence with another variable is analyzed.</span><span />
Step 2 should be sensory neurons send electrical signals to the brain
Step 3 brain learns information about the environment
Step 4 brain sends electrical signals to the muscles
Answer:
1. The sun shines on a plant 2.chlorophyll traps energy from the sun 3. the plant makes sugar and oxygen 4.cells use sugar for energy
Explanation:
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Answer:
tramwayniceixand 1 otherlearned from this answer. Answer: 1. Micro-evolution is the change in allele frequencies that occurs over time within a population. This change is due to four different processes: mutation, selection (natural and artificial), gene flow and genetic drift. 2.
Explanation:
This change is due to four different processes: mutation, selection (natural and artificial), gene flow and genetic drift. 2.
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