Pacific mountain system, series of mountain ranges that stretches along the Pacific Ocean coast of North America from northern British Columbia (Canada) to northwestern Mexico. They run for some 4,500 miles (7,250 km) in the United States and extend northward into Canada for another 1,000 miles (1,600 km).
Answer:
Humans and most other mammals have two sex chromosomes, the X and the Y. Females have two X chromosomes in their cells, while males have both X and a Y chromosomes in their cells. Egg cells all contain an X chromosome, while sperm cells contain an X or Y chromosome.
Explanation:
I believe it is A. Mountain range
(Correct me if I'm wrong)
Answer:
Madagascar
Explanation:
The largest number of islands of Africa are found in the Indian Ocean, with the sovereign island nations of Comoros, Seychelles, Mauritius and Madagascar located off the southeastern seaboard of Africa being the most notable.
Answer:
The Earth's plates move due to molten lava under the Earth's crust.
Explanation:
The hot lava moves upwards and pushes plates together or away.
