What atoms (and how many) exit the light dependent reactions of photosynthesis?
what atoms (and how many) enter the calvin cycle of photosynthesis?

Which of the following is true about the introduction of a non-native species to an environment? (a) they usually adapt quickly so they can have a positive affect on the environment. (b) they can disrupt the environment and cause much damage and devastation to native species. (c) they usually become predators in a food chain and to keep prey populations under control. (d) because the native species are better-adapted to the environment, the non-native species always end up dying out.

Number and variety of living organisms; includes genetic, species, and ecological types.

Around 50,000 rainforest species go extinct every year. select the best answer from the choices provided t f