What meteorites are composed of mostly "rock minerals" with some metallic material
a) asteroid primitive
b) processed primitive
c) carbon-rich primitive
d) stony primitive

Which process of living things produces water that enters the water cycle

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from