When does the placenta begin to form?
O
A. In the second trimester
O
B. At the end of the third trimester
O
C. A few days after fertilization
O
D. At the end of the first trimester

Asea turtle has washed up on a remote section of a beach. this known as a stranding occurs when a dead,sick or injured sea turtle washed up on the shoreline. which statment best explain why stranding should be reported immediately to local authorities

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing

This is the interaction of two organisms where one is and the other is neither nor harmed.