Put these words in order from the smallest to the largest level of organization of an organism.
organism

organ systems

cells

organs

atoms

tissues

What do all macromolecules have in common with each other? oa. they all are formed from the same elements.ob. they all have major roles in cell membranesoc. they all act as catalysts in the body.od. they all have peptide bonds between carbon atoms.

Choose the correct words to complete the sentences related to genetic screening. is a procedure that is used during pregnancy to detect genetic defects. is extracted from the uterus and used to identify genetic disorders?

Several billion years ago which gas was the least prevailant in the atmosphere