Answer:
the correct bet is "toxicity study"
Explanation:
The toxicity study describes the dose, nature, incidence, severity and the mechanisms of the toxic effects that damage our organism, in this case in the water of the X people, this study establishes the magnitude of the damage in exposure to living organisms.
I hope it's help you
Answer:
Chinese communities in the United States underwent dramatic change because of the Chinese Exclusion Act. Families were forced apart, and businesses were closed down. Because of the severe restrictions on female immigrants and the pattern of young men migrating alone, a largely bachelor society emerged.
Explanation:
A is the answer shear fits with it
I would say a natural disaster like a forest fire that could kill trees that are their homes. A forest fire could kill the trees and also the cones they eat for food and thus destroy their habitat and also a source of food and the branches they use to travel from one tree to another in the upper stories of the forest.
<u>Evidence of a large glacial lake northeastern Ontario:</u>
The evidences of a large glacial lake in northeastern Ontario are, sand ridges of Rome, relief forms in the plain around the lake in Ontario, the structure of the soil and the glacial remains.
This large glacial lake was named Iroquois which existed approximately 13000 years ago and is said to be enlargement of today's Ontario lake. This was formed because the St Lawrence river was blocked by an ice sheet and it drained towards the south east.
