It is answer A, the hippo is not benefitting from the catfish, therefore it is not mutualism.
Answer:
summer is caused by earths closeness to the sun
63 in water 100/g KNO3 Potassium nitrate
Answer:
B. Layers that cut across the most other features are youngest.
Explanation:
Using the principles of cross-cutting relationships, you can determine the relative age of rocks found in the ground. The idea behind it is that the geologic feature which cuts another is the younger of the two features, and it had been around for 400 years. It's not very precise but it is good for determining relative age.
Yes you are correct, it is a chromosome
