Rust on weathered rocks is caused by saltation oxidation hydrolysis

What came first egg or chicken? and is tomato a vegetable or a fruit?

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?