Which of the following is the minimum diameter for a sapling? O one quarter-Inch
O one half-Inch
O two Inches
O four inches

Which of the following systems in absorbing oxygen and releases carbon dioxide

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.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above