the answer is C ik that because it said it was right on my test
Answer:
mortality rate, measure of human infant deaths in a group younger than one year of age. It is an important indicator of the overall physical health of a community. ... High infant mortality rates are generally indicative of unmet human health needs in sanitation, medical care, nutrition, and education.
Ecologists are unsettled on whether or not any truly commensal interactions among organisms take place or not because it depends on the kind of organisms. When a bird makes a nest in a tree and lays eggs, the eggs are definitely safe. This procedure does not harm the tree directly, but it can stop the sunlight from reaching some parts of the tree. This actually shows that the bird has benefited from the situation but the tree has lost out.
Answer:
Mercury is the smallest planet, but its surface gravity is about the same as that of the much larger Mars because Mercury is more dense.
hope this helped good luck!