What is the greenhouse effect? A
Greenhouse gases trap in oxygen and warm Earth.

B
Greenhouse gases trap infrared radiation and warm Earth.

C
Greenhouse gases trap UV radiation and cool the Earth.

D
Greenhouse gases trap carbon dioxide so plants can grow.

B.

Explanation:

due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.

the correct option is option d

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.