How and why humans make changes to their

ecosystems. Are these changes negative or positive?

Where would tiger sharks be found? a. arctic ocean b. baltic sea c. indian ocean d. north sea

Why are astronomers looking for evidence of ancient water on mars?

Which of the following can transmit HIV? a. vaginal fluids b. perspiration c. saliva d. tears

What makes water a polar molecule? A. The liquid nature of water B. The equal forces between oxygen and hydrogen C. The uneven bend in the bond between oxygen and hydrogen D. The ionic bond between the oxygen and hydrogen

What is phylogeny? define.

Monohybrid cross is made between plants that

Oxygen is most less abundant in water than air. Air contains 21% oxygen but the oxygen content in water is only 0.001% What factors (physical and biological) can affect the levels of dissolved oxygen in the gulf waters? Think of oxygen cycle

Which epoch covers the time from 5 million to 1.8 million years ago? 1. Eocene 2. Miocene 3. Paleocene 4. Pliocene

Who pays for most of the scientific research done in the United States

If a person with o blood type produces offspring with a person with b blood type, then what percentage of their offspring will be type o in the best case scenario?