Answer:
Some organisms within a population may have skin that is less porous and so more resistance to the chemicals being absorbed. So, the ability to resist absorbing the chemical into the cytoplasm and body tissue is the main reason.
Explanation:
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A radioactive isotope decays at a constant rate proportional to the number of radioactive atoms remaining. A simple way of describing the speed of decay is to see the time it takes for half of the atoms of a radioactive parent to decay and form the daughter element(s). This is called the half life.
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Answer:
2nd option is correct .
Explanation:
In Anaphase ii , sis chromatids separates and pulled towards the opposite sides of the cell.
Freshwater means low salt content. The zones namely Standing which is compose of ponds and lakes and has littoral zone which algae,floating aquatic plants and clams can be found. Next is limnetic zone and has plankton. Next is Flowing includes streams and rivers and in there resides catfish and carp. For sea water it has Marine which has aphotic zone where anemones,arrow worm and angler fish resides.Another, coastal zone compose of coral reefs and mangrove and lastly the intertidal zone with small critters.
The correct answer is A. A lost species will make different species not get their food, and it goes on like a big domino effect, eventually effecting hunans.