On a hot summer day, you notice a line of dark clouds forming. based on this observation,
you go back inside and get an umbrella. what scientific skill have you used?
a.)classification
b.)prediction
c.)communication
d.)quantitative observation

Sand spinifex grass is adapted to growing on sand dunes. it is a rapidly spreading plant and the creeping runners produce new root systems. which of these best explains the benefits of these features? a. it limits water loss through the leaves. b. it provides support by anchoring the plant. c. it protects the plant from predators. d. it allows the plant to tolerate salt. reset submit

Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?

Why has two different alleles for the same trait?