Which mutation would be most beneficial to an elephant and its descendents?

a.
a mutation of the hemoglobin allowing better oxygen-carrying capacity

b.
a mutation of the tail fur so it becomes course and thick

c.
a mutation of the skin color resulting in an albino (white) elephant

d.
a mutation of the tusk size and length resulting in smaller and shorter tusks

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f