Answer:
Indicator species, organism—often a microorganism or a plant—that serves as a measure of the environmental conditions that exist in a given locale. ... For example, greasewood indicates saline soil; mosses often indicate acid soil. Tubifex worms indicate oxygen-poor and stagnant water unfit to drink.
Answer:
<h3>C</h3>
Explanation:
<h3>i just did it and it said it's C</h3>
A. a piece of DNA that controls a trait
Answer:
About 26 percent of adult stranded sea lions that die are diagnosed with cancer. Which is high for the population of wild animals. The research finding shows that death of a sea lion with cancer is invaluable. The research shows that sea lion pulp are expose to PCBs while in utero. This is a important health effects in the later life of sea lions,because PCBs can affect organ development.
During the research the Center collects samples from each of these patients to measure environmental exposure to carcinogens,it was discovered that most sea lions were infected with a herpesvirus similar one that causes Kaposi's sarcoma in humans.