When an environment , plants, and animals compete for necessary resources such as , and which allows them to survive and reproduce; others die or move to new

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

When water freezes, it . contracts expands

Ausable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state. oceans rivers glaciers freshwater lakes groundwater