If there were an additional trophic level that consisted of organisms that prey on snakes, about how much energy would be available to organisms at that trophic level?    

Chloroplasts most likely evolved from _____________.

__________ include all organisms (algae, animals, and bacteria) that drift with ocean currents.

Lobed fins should be designated at which position on the phylogenetic tree?   Amphibians Ray-finned Fishes Lobe-finned fishes Lampreys Reptiles Mammals Sharks and Rays Jaws 1 1 1 0 1 1 1 Amniotic Egg 0 0 0 0 1 1 0 Legs 1 0 0 0 1 1 0 Lobed fins 1 0 1 0 1 1 0 Milk Production 0 0 0 0 0 1 0 Lungs 1 1 1 0 1 1 0

The scientific study of the diversity of organisms with the purpose of deriving their evolutionary relationships is called _____.

Coral reefs are located

What is the factor of ecosystem health that is associated with the rate at which plants and other photosynthetic organisms produce organic compounds in an ecosystem?

Examine the following food chain. If you added a killer whale, that feeds on sea otters to this chain, which of the following would you expect to occur?

Carbon mainly cycles between the biotic and abiotic worlds by the processes of

Cystic fibrosis is a genetic disease that causes mucus to build up in the lungs. Most patients die from an infection caused by a Gram-negative bacilli. This bacteria forms a _____________ that protects it from phagocytes and antibiotics.