What corona virus.......?
Answer:
The ecosytsem has a very fine balance. Each species is dependant on one another for food and population control. Introducing a new species such as the Cane Toad which has been introduced into Australia and Flordia and are extrmely invasive completly wipping out populations of Native species and are a huge problem. If you lose a population such as the wolves in yellow stone species such as elk will actually suffer from starvation and other issues due to lack of food etc because the wolves were not there for population control. But in some cases such as the wolves who were added back into Yellow stone it had a huge positive impact on species/populations.
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Answer:

Cost : The expenditure incurred by a producer on the factor as well as non-factor inputs for a given amount of output of a commodity.
Answer:
The energy from the cell will block substances from being in the animal and stop the toxins from getting into the animal cell.
Explanation:
The job of this energy is to block everything from coming in and out of this cell membrane.
<span>All cells have in common -
The plasma membrane -<span> is an outer covering that separates the cell’s interior from its surrounding environment.
</span>Cytoplasm -<span> consists of the jelly-like cytosol inside the cell, plus the cellular structures suspended in it. In eukaryotes, cytoplasm specifically means the region outside the nucleus but inside the plasma membrane.
</span>DNA -<span> is the genetic material of the cell.
</span>Ribosomes<span> - are molecular machines that synthesize proteins.</span></span>