g Which statement is true about endothermy in mammals and birds? Which statement is true about endothermy in mammals and birds? Birds are reptiles and all reptiles are ectothermic. They both inherited this trait from a common ancestor. Endothermy arose independently in these two lineages. Birds are more closely related to mammals than to reptiles.

1.989×10^30 kg is the weight of the sun.

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.

Achair would be nonliving, also a toy, clothesand living things would be humans, animals, bugs