<span>it comes and goes through the madreporite - a small valve like structure</span>
Answer: Sex evolved as an extremely efficient mechanism for producing variation, and this had the major advantage of enabling organisms to adapt to changing environments. Sex did, however, come with a cost. In reproducing asexually, no time nor energy needs to be expended in choosing a mate.
Explanation: no kizzac lemme get brainliest please?
A conflict involving wanting to eat an ice cream sundae andd wanting to lose weight is known as an intrapersonal conflict. An intrapersonal conflict occurs within an individual and occurs in the persons mind. It involves an individual's thoughts, values, principles, beliefs and emotions. If not resolve, this conflict can lead to depression.
No. Cells die by the THOUSANDS every day, but are replaced with new ones.
James Hutton
Uniformitarianism is the principle or assumption that the same natural laws and processes that operate in the universe now have always operated in the universe in the past and apply everywhere in the universe. This concept became known as uniformitarianism and can be summarized by the phrase "the present is the key to the past."
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