Fish and bird are biotic and the bird would hurt the fish depending on the species of birds since some birds are carnivores.
Answer:
O Cells are all the same on the inside
The rose population would decrease because the bees would need more food. Since the skunk has more food, it would increase and the eagle population would probably increase too because of more access to skunks. The eagle interpretation may be true unless the eagle is perceived as a scavenger. Then the population would most likely stay the same. The sun would stay the same because it is an abiotic factor in an ecosystem. your welcome fam
Eukarya. Eukaryotes are the only organisms that have true nuclei and membrane-bound organelles, though some bacteria have a pseudo-nuclei.
The reason why only eukaryotes have true nuclei and membrane-bound organelles is because only eukaryotes have figured out how to create so much energy through the mitochondria, which is required for high compartmentalization.
It's A, because it's always important to drink water. If you think about it, all the other answers seem invalid.