Please help will mark brainlest

What is located at both of the poles on Earth

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

Approximately what wavelength of light is best absorbed by chlorophyll a

Which spheres are involved when sedimentary rocks formed from parts of seashells at the bottom of the ocean? a.) biosphere, atmosphere, geosphereb.) geosphere, hydrosphere, biosphere c.) geosphere, exosphere, hydrosphered.) hydrosphere, biosphere, atmosphere