In sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid