Chemical compounds
a are always made up of several atoms with the same number of protons.
b.
can be made up of a combination of different elements
c. are always made up of one type of element and one type of atom.
d. can be made up of one atom with several different elements in it!
several diferent elements in it

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.