The process by which rocks are worn down and altered over a period of time is called

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

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

Construct at least two possible hypotheses for the student’s experiment.