Which one is wrong I did them but it’s saying I got partial credit

Llama have 74 chromosomes how many chromosomes will they be found in their gametes explain how you know

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.