The answer is either A, the bottleneck effect or C, natural selection. The answer is most likely A because it is hinted that the predator fish was placed in the isolated stream. The predators eating the darters less than 5cm is natural selection though.
Answer:
The speed of the light waves will decrease
Answer:
Archean
Explanation:
Remember that in the phyllogentic tree, there are three main groups of living things, the archea, the bacteria and the eukarya. Animals, Plants and fungi belong to the las group in which they share some charcteristics like have their DNA in a nuclear site surrounded by a nuclear membrane.
In Archea, they do not have a nucleus and they lack a membrane- bound organelles, that means, that they consider prokaryotes.
Answer:
that's not a good idea, most teachers search the web to check for plagiarism, and if they did they would see this question. but I'd say to go over the main facts, such as their diet, their ecosystem, and animals that prey on them. then add a few facts as space fillers if you need to.