Answer:
Charles Darwin
Explanation:
In Galapagos Islands, Darwin observed that animals from different parts were clearly similar but had very different features (such as beak type in finches). He imagined that all of these finches belonged to the same original species but had adapted to better fit their environment in different islands.
Energy from the sun..............
A male offspring is produced when the sex chromosomes combine in an XY pair. A female would consist of an XX pair.
They need an independent variable, in this case it should have been the fish food. Everything should be identical except the fish food, from what I read , it doesn't say anything about what type of food they used, or the dosage.
