Which is most likely a reason why most reptiles fail to give their offspring parental care after laying the eggs? reptiles undergo external fertilization, so they must seek out new mates as soon as possible. reptiles do not have any natural enemies, so parental care is not needed. the eggs are laid in water, and adult reptiles cannot survive in water. the eggs have tough shells that provide protection until the eggs hatch.

D) The eggs have tough shells that provide protection until the eggs hatch.

the index of refraction of the second medium is higher. i just took the test trust me !

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.