Answer:
Parasites such as lice and fleas that live outside a host are called ectoparasites
Mitochondria creates power for the cell which is why the are sometimes referred to as the powerhouse of a cell
Answer:
A) 
B) 
C)
or
hours
Explanation:
A) The formula that can be used for bacteria after "t" hours is

Where ,
represents the population after "t" hours
represents the initial population.
represents the rate of growth of population
represents the time taken by the population to grow
B) Here let us first find the rate of population growth.

Thus, the population of bacteria after 5 hours

C)

Answer:
Without bats, say goodbye to bananas, avocados and mangoes. Over 300 species of fruit depend on bats for pollination. Bats help spread seeds for nuts, figs and cacao -- the main ingredient in chocolate. Without bats, we also wouldn’t have plants like agave or the iconic saguaro cactus.
Explanation: