After an amphibian hatches from an egg they begin life as a frog. tadpole or larvae. salamander. embryo.

The correct answer for the blank is-

tadpole or larvae.

Explanation:

During the metamorphosis (that is transformation of immature egg to adult forms) in amphibians such as frogs, there occur four stages that are egg, tadpole, froglets, and adult.

Amohibians such as frogs, when hatch from egg, they begin life as tadpoles, which are tiny aquatic larvae, having external gills for respiration and are mainly vegetarian.

As they grow, limbs and internal gills are formed and they transform to froglets, which further undergo some developmental changes to give adult forms.

Thus, tadpole or larvae is the right answer.

1 and 6 for apex

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation: