The human body needs energy in order to carry out life processes such as breathing. Where does the body get this energy?
A.
from eating food
B.
from sleeping
C.
from learning about new things
D.
from lying in the sun

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings

According to this food web which of the following would be considered primary consumers

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).