African cichlids are a group of closely related fish species. there are at least 500 known species living in three small lakes. over time, specialized teeth and body colorations have evolved for each species in response to mutations and competition for food and mates. this change over time is an example of

What are some things that limit population growth?

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.