Answer:
natural selection
Explanation:
According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.
Explanation:
last option is the correct one.
The hypothesis by the farmer can be tested by conducting experiments using the aged insecticide on a new set of flies on another farm.
<h3>What is a hypothesis?</h3>
A hypothesis is an explanations put forward to explain an observation.
Based on the observation that the insecticide became less effective, the farmer hypothesized that it was because the insecticide degraded with age.
This hypothesis can be tested by using the aged insecticide on a new set of flies on another farm.
Therefore, experiments can be used to confirm or disprove a hypothesis.
Learn more about hypothesis at: brainly.com/question/11555274
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Answer:
Brain makes your movements but heart is what makes you live so its really up to you to choose which one you find more important both are necessary though so whether you pick brain or heart you will get a good grade as long as you explain why you choose it
Explanation: