The evolution of flowers and fruit corresponds with the evolution of:

What is the first plan for rescue that the four men devise?

After prolonged investigation, the narrator decides that by daylight, the wall-paper resembles “an interminable string of toadstools” (NAAL9C p.851). But by moonlight, the wall-paper has two patterns, one in front and a second one underneath the first. What are these two patterns?

After we produce energy using one of the earth’s many non-renewable energy resources (coal, oil, natural gas), some of that energy (less than half!) is actually used for some meaningful process while some of the energy (more than half!) never gets used for any meaningful process.  The energy that never gets used is called (?).

[Answer1] happens to species while [Answer2] happens to populations.  

A contaminant is introduced into a stream unintentionally.  The smallest life forms in the stream absorb the contaminant into their bodies which are then eaten by larger and larger life forms so the contaminant moves, “up the food chain”  becoming concentrated in greater and greater amounts.  The result is that when you eat a large fish from the stream, you will have eaten an amount of the contaminant hazardous to your health.  This is an example of

Which of the following is not a major abiotic factor controlling community structure in an ecosystem?

Which of the following would you expect to find on the third trophic level in an ecosystem?

Sunlight energy falls on the Indian River Lagoon.  Sea grasses capture and store some of the sun’s energy in their tissue.  Marine snails then eat the sea grass and, eventually, crabs eat those snails.  To measure Secondary Productivity in this system, you would need to measure (?).

The best definition of biodiversity is (?).