Which of the folowing statements is true about external and internal fertilization?

a. all animas that lay eggs use external fertilization
b. internal fertilization doesn't require sexual intercourse
c. external fertilization doesn't require sexual intercourse
d. all animals that lay eggs use internal fertilization

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.

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament

The term life cycle includes the entire process of: adults defending their young providing a conducive environment adults producing gametes fertilization the growth of the offspring to adulthood