Correct Answer is A. They were able to increase their productivity due to the popularity of tractors.
Answer:
C: Finch A has a large, sturdy beak; and Finch B has a thin, sharp beak.
Explanation:
Darwin's finches provide an ideal model for explaining evolution. Darwin observed the finches in the 10 islands that together made the Galapagos island. He observed that the finches had adapted their lifestyle and mannerisms according to their surrounding environment. He particularly noticed the structural differences in finches's beaks according to their feeding style. Finches who fed on nuts and seeds had large sturdy beaks so that they could break them open. Finches feeding on worms had thin sharp beaks so that they can easily pick up worms and kill them.
The semicircles are probably the longitude and the latitude, if that what you are talking about.
Duck, Alligator, Crocodile, Dolphin
It is a wedge as when it cuts it separates the two sides of what ever you are cutting just like a wedge <span />