What does it mean to say that a plant community provides ecosystem services?
a. it increases npp.
b. it improves the ability of the abiotic environment to support life.
c. it increases species richness.
d. it provides economic gain for humans.

Match the type of adaptation to the correct example, structural adaptation functional adaptation behavioral adaptation example type of adaptation elephants live in herds to protect their young leaves of a rain forest plant species have a pointed tip that enables rainwater to drain off easily. camels have nostrils that they can close snakes produce venom to kill prey and defend themselves. earthworms coil when touched, as part of a defense mechanism. human skin darkens with increased exposure to sunlight.

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Why do we perceive objects as retaining their brightness under different lighting levels?