Describe the change in shape of the lens when a person looks from a near object to a distant object

What do heterotrophic cells need to survive?

Classify the structures as homologous or analogous, depending on their structure and function.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils