Pls help me 1:__Cu20 + ___C ↠__Cu + ___CO2

2:___ Na + ___O2 ↠ ___ Na2O
3:___ C2H4 + ___ O2 → ___ CO2 + ___ H2O
4:___ C4H10O + ___ O2 ↠ ___ CO2 + ___ H2O

4the indian leaf butterfly has traits that allow it to resemble a leaf. the bright colors of the monarch butterfly indicate that the butterfly tastes bad and can be poisonous. how does the appearance of these butterflies them to survive? f the indian leaf butterfly is able to avoid predators while the monarch butterfly warns predators away. g. the indian leaf butterfly frightens predators away while the monarch butterfly poisons predators before they can eat it. h both butterflies rely on camouflage to avoid predation. j both butterflies cooperate with one another to avoid predation.

In what for do plants utilize nitrogen? why do they need nitrogen?

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x albino a) all chinchilla b) 1/2 chinchilla, 1/2 albino c) 3/4 chinchilla, 1/4 albino