The symbiotic dinoflagellates that live in the tissues of coral polyps ____.
A) provide carbon dioxide and phosphates for the polyps
B) feed on the tissues of the polyps and are dangerous parasites
C) are the main cause of coral bleaching, and are threatening the reefs of the world
D) provide additional nourishment and oxygen to the polyps through photosynthesi
Question 2
Life in productive tropical reefs is best characterized by ____.
A) extreme competition for food, living space, and mates
B) very few species, but large numbers of each species
C) very little competition due to the abundance of resources
D) mostly symbiotic relationships
Large size can provide a refuge from predators. While young African elephants may be vulnerable to p
The Krapina remains may provide evidence of cannibalism by some Neadertals.
Ethnographic studies of the Baka pygmies of central Cameroon, and other people who still live as ...
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Vascular tissues