Answer:
D. guard cells.. this is answer i think..
The population of blue crabs will be difficult for the scientists to count because of unreliable ways and natural phenomenon or occurrence that causes the water's temperature to rise. According to climate reports, year 1999 have warmer temperature and this probably caused the blue crabs to be active, but on year 1990 female blue crabs sustained a normal quantity of production of their species. Thus, the estimated count of population of blue crabs is probably more accurate in year 1990 than year 1999 because of the stable production of the female crabs.
Answer:
the periodic table
Explanation:
the periodic table show all the element to your answer
<span>Tsetse flies feed by piercing the skin with their mouthparts and: Sucking the blood of animals and humans. </span>
They lowered the risk of food being over/undercooked
