Which of these rocks can be chemical or biochemical? a. Banded iron formation
b. Chert
c. Evaporites
d. Coquina

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water

The desert expands by hundreds of square miles each year.

These two images show humid tropical and humid continental climate zones. each climate zone has a different temperature and experiences different types of seasons. in a short paragraph, choose one of these two zones and explain why it is more appealing to you. which of these zones would you rather live in?