All veins carry:
o only oxygen rich blood
o blood toward the heart
o only oxygen poor blood
o blood away from the heart

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?

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).

What will happen if deforestation continue to destroy the green plant on the planet