If a scientist is observing biotic and abiotic factors, which of the following level of organism must she be studying?

A. An ecosystem

B. A population

C. A community

D. An individual organism

properties of baking soda property observed observation color white texture fine crystals odor none mixed with water dissolves mixed with vinegar bubbles maggie recorded her observations of the baking soda used in lab today.

Which is not a factor used to divide the ocean into distinct marine life zones?

Human language developed as the result of genes and the opportunity to hear language during a sensitive period in early life. what type of explanation is this

Sperm cells and egg cells are needed for human sexual reproduction. Describe in detail the type of cell division that produces sperm cells. (4 marks)

Which STD's have a treatment with antibiotics? Gential herpes Chlamydia HPV Gonorrhea Syphilis Hepatitis B

Which process occurs only in autotrophic organisms?

Nylon fiber is classified under which one of these headings? A. Protein B. Polyurethane C. Polyester D. Polyamide

What factors influence the growth of organisms and their ability to reproduce?

In trying to differentiate between chronic bronchitis and emphysema, you know that chronic bronchitis: 1. Usually occurs after age 50 and has insidious progressive dyspnea. 2.

The bonds formed when electrons are shared is called a (n) ? A) ionic bond B) hydrogen bond C) covalent bond