Hello, Thebestdog2555. Your best answer would be A - Land and water environments. Since there is a lot of rainfall which ultimately causes runoff of fertilizers and pesticides, it will go into the ocean and this is how the land helps pollute the water. As for the water part, a lot of it starts as the air pollution which can be trapped into the ocean as well, causing oxygen depletion. I hope I helped!! Let me know if I can answer any more questions. Have a great day!! :)
Answer:
It would be b. 1 TT: 2Tt: 1 tt. Because crossing two heterozygous parents means the genotypes for them are Tt and Tt. Which means that there is only one way to get TT or tt and 2 ways to get Tt
After the worms have finished eating their food, the students must now weigh the worms and record this data. They can then compare these new weights to the starting weights of the worms and see if it demonstrates their hypothesis. Hope this helped :)