Ques: Q: What visual property of soil indicates fertility and nitrogen content? Choices: - texture - contrast - quality - color A:
Ans: color

Ques: Q: Most food chains and webs have a maximum of how many trophic levels? Choices: - 3 - 10 - 6 - 4 A:
Ans: 4

Ques: Q: What branch of science is defined as the study of matter? Choices: - astrophysics - geology - biology - chemistry A:
Ans: chemistry

Ques: Q: In machines that increase force, such as ramps and doorknobs and nutcrackers, what is the relation between output and input force? Choices: - drop is greater - output is smaller - input is greater - output is greater A:
Ans:
output is greater