4. A mineral cannot be.
A. formed from once-living material.
B. solid
C. Naturally occurring
D. light on color

Which of the following structures is not found in both plant and animal cells? a) chloroplast b) cytoskeleton c) ribosomes d) mitochondria

What in scientific term why the salty popcorn causes this thirst

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).