Life Evolved in the Oceans Long Before It Evolved on Land.Which

question 22

Multiple Choice

Life evolved in the oceans long before it evolved on land.Which of the following had to occur before organisms were able to live on land?

• A) The Earth's landmasses had to become wetter.
• B) Organisms had to adapt to the harsh, dry conditions faced by life on land.
• C) Animals had to develop internal skeletons and efficient transport mechanisms.
• D) The supercontinent Pangaea had to break up into subcontinents.

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Definitions:

Pronuclei

The haploid nuclei of the egg and sperm that come together but do not fuse immediately during the fertilization process.

Fusion

The process or result of joining two or more things together to form a single entity.

Zygote

The initial cell formed when a sperm cell fertilizes an egg cell, marking the beginning of a new organism.

Prenatal Period

The time frame in human development that occurs from conception until birth.