1. Create a timeline showing how an egg can turn into an embryo. Describe all the events happening before and during fertilization. List and draw all the reactions and stages occurring during embryogenesis

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution

Produce proteins by following coded instructions that come from the nucleus of the cell.

Plants need carbon dioxide from their environment to produce glucose during which stage of photosynthesis?