The correct answer is letter A. Venom glands and varied diets are the reasons why cane toads are considered as invasive species in Australia. They cause major ecological imbalance within their immediate surroundings and have caused an infestation all over Australia.
<span>C. Single events or several causes working together to produce extinction in a short period is referred to as mass extinction.
Example:
</span>Destruction of forests, mountains, and bodies of water to satisfy human needs result to the imbalance of nature which also give rise to global warming.
Animals and plants have lost their habitats. They lost their means to live. They lost their food sources and they suffer and die because of humans irresponsible acts.
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The answer is B: no
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Calcium is one of the most important minerals for the human body. It helps form and maintain healthy teeth and bones.
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Function
-Building strong bones and teeth.
-Clotting blood.
-Sending and receiving nerve signals.
-Squeezing and relaxing muscles.
-Releasing hormones and other chemicals.
-Keeping a normal heartbeat.
The answer is binary fission