Most galaxies have doppler shifts toward the of the spectrum

The negative impacts of nonnative species generally outweigh the positive impacts

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

What characteristic does giardia have that makes it a protist, a characteristic that all other protists have? a. it is a unicellular eukaryote. b. it is a eukaryote that is not an animal, a plant, or a fungus. c. it is parasitic and has flagella. d. it spends part of its time in a body of water.