Why are there fewer organisms at the top of the food pyramid

What best illustrates a result of natural selection?

Question 21 3 pts When an organism is classified as an autotroph, these organisms O move very fast. can not produce their own food. O produce their own food. O can not move from one place to another.

Where would you find the lipid bilayer in a cell?

Why is heat described as "lost" energy?

A recovery heart rate for a person who is 25 years of age after 5 minutes of working out is аbout: Answer 120 195 110 100

The absolute threshold is the: A. decreasing sensitivity to a stimulus over time. B. intensity of a stimulus that can be detected in the presence of noise. C. minimal intensity needed to just barely detect a stimulus. D.

Aquatic organisms in lakes and ponds are often able to survive the water underneath a layer of ice because the water underneath the ice remains liquid.

On an evolutionary tree, what is the intersection and common ancestor known as?

Why DNA must unzip before it can be copied.

Dna is a polymer, which means that is made up of many repeating single units (monomers). what are the monomers called?