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

Photosynthesis converts light energy to chemical energy. which molecules are the end product of this transformation of energy in this reaction?

What does natural resource management aim at ?

You are given an electron micrograph of a bacterial cell. in the micrograph you can clearly see three thin layers of different densities surrounding the cell. based on the micrograph, you can infer that this cell is and would appear after application of the gram stain procedure. gram-negative / pink gram-positive / purple gram-positive / pink gram-negative / purple