If the nucleus breaks up into lighter elements when an animal divides into two parts, then what breaks up into two lighter elements when an animal divides into two parts? Answer choices: - the blood cells - the heart - Energy. - the main element - heat energy - light energy - the nucleus - sensory neurons
the nucleus

If marmots in underground burrows will be protected from wild fire, then marmots in what will be protected from wild fires? Answer choices: - underground burrows - looseness of dirt or compost - one celled organisms - above ground pools - grassy fields - an external framework - near the shoreline - tall trees
underground burrows

If animals and humans need to eat plants to survive, then animals and humans need to eat plants to what? Answer choices: - get pregnant - survive - be happy - health - energy - reproduce - be productive - Energy.
survive