Experimental Question: How does the number of organisms affect the amount of dissolved oxygen in the environment?
a. Develop a hypothesis. (If, then, because...)

Which element provides strength to the exoskeleton of clams and oysters

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

Choose the correct words to complete the sentences related to genetic screening. is a procedure that is used during pregnancy to detect genetic defects. is extracted from the uterus and used to identify genetic disorders?