Sarah is going to pay for an item using gift cards. the clerk tells her that she will need 2 gift cards and an additional $3 to pay for the item. write an algebraic expression to model the situation using the variable g for the number of gift cards to pay her total bill, t.

Step-by-step explanation:

Given : Sarah Is going to pay for an item using gift cards. The clerk tells her that she will need 2 gift cards and an additional $3 to pay for the item.

The number of gift cards is denoted by 'g'.

Then, the total algebraic expression to model the given situation bill is given by:-

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.