The pollutants in 1970 were the highest since recorded history and are declining steadily.
6 chromosomes. This is because gametes are usually characterised as to having only half the number of chromosomes of the somatic cells.
This is done through meiotic division.
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A is your answer I believe because they do indeed provide a way to review other scientists work and or experiments
Answer:
Mammals, insects, fish and plants all have different systems of exchanging gas. For mammals we breathe into our lungs, for fish they use gills and insects use spiracles.
Explanation:
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Answer: B, frog
Explanation: I took the quiz and got it right a p e x
