7. Whale flippers, bat wings, and cat legs are considered to be "homologous structures" because they have the same skeletal parts, despite the fact that they have different functions. What do these "homologous structures" tell us about the evolution
of the whale, bat, and cat? SC.7L.15.1
A. Whales, bats, and cats may have had a common ancestor.
B. Whales, bats, and cats come from very different ancestors.
C. Whales, bats, and cats are all part of the same animal family
D. Whales, bats, and cats recently diverged on the evolutionary tree.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

the glands which are associated with each description is given below:

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.