I am not sure on this question
The answer to the question is D
Answer:
Factors that affect the speed of a river include the slope gradient, the roughness of the channel, and tides.
Explanation:
Answer:
Negative effects: Cutting down trees and littering have a negative effect on animals and plants.
Positive effects: Protecting endangered species and cleaning lakes and seas
Explanation:
Ecosystem science is the study of interrelationships among living organisms, biochemical processes, and human activities in ecological communities.
Two human activities which affect the ecosystem negatively:
1. Cutting down trees
2. littering harm animals and plants.
Two human activities which affect the ecosystem positively
1. Protecting endangered species
2. cleaning lakes and seas
The atomic number is the amount of electrons an atom has, therefore:
An atom with 66 as it's atomic number has 66 electron and 66 protons (if the atom is neutral, if not, things are different).
Hope it helped,
BioTeacher101
