Answer:
Predators, food chain, fights with males, toxic water, contamination, plastic
Explanation:
Medications can be tested on cell cultures instead of being injected into patients unnecessarily.
Cancer cells continue to grow in the cultures uncontrollably allowing scientists to test multiple medications on the cancer cells.
<span>i think
D. As oceanic crust sank beneath other oceanic crust, the cooling rocks aligned with the earth's magnetic field, which periodically reversed. This periodic pattern was seen on one side of a mid-oceanic ridge</span>
