It’s Wolf biologists are a specific type of wildlife biologist - a scientist employed to observe and study animal behaviors. In this case, their research and study are limited to wolves. They spend time in the field observing the wildlife and their interactions with each other, prey animals and the ecology.
Ok this might not be the best answer but just by reading it, it may be unreliable because numbers do change over time
A flatworm does not have a body cavity.
Correct Answer is - B.) Through an electron transport chain
