Answer:
Effort = 125 N
Explanation:
Given
Load (L) = 500 N
Load distance (L.D) = 20 m
Effort distance (E. D) = 80 m
Effort (E) = ?
We have the formula that
E * E.D = L * L. D
E * 80 = 500 * 20
80E = 10000
E = 10000/80
E = 125 N
Because two organisms one with the trait and one without could make an organism which would cause variation
Answer:
Primary producers are organisms that acquire their energy from sunlight and materials from nonliving sources. Algae, higher plants, and some bacteria and protists are important autotrophs in running waters. Heterotrophs obtain energy and materials by consuming living or dead organic matter.
An autotroph is an organism that can produce its own food using light, water carbon dioxide, and other chemicals.