Answer:
a dam flooding a valley
Explanation:
It would be a dam flooding a valley because in a new ecosystem there would then be a increased load of phosphorus and nitrogen and increased algae growth.
Answer:
C (All cells have a nucleus
.)
Explanation:
Prokaryotic cells do not have a nucleus, but they are still cells.
Answer:
Evolution is a scientific theory used by biologists. It explains how living things change over a long time, and how they have come to be the way they are. ... It is known that living things have changed over time, because their remains can be seen in the rocks. These remains are called 'fossils'.
Our lungs do not collapse when we expel air forcefully because our lungs do not ever full fill or empty of air compeletly. A small amount of air remains in the lungs no matter how hard you expel your air.
The most plausible evidence that birds have evolved from dinosaurs is that the birds have the exact same bone structure as one of the dinosaur super-families, the <em>Saurischia. </em>In this group of dinosaurs we have the total same skeletal structure as in the birds, and most of the dinosaurs of this branch were bipedal, as are the birds, both flying and nonflying.
