Which statements describe the energy in a food web? Select three options.
When an organism eats another organism, it loses energy.
Producers have the greatest amount of available energy.
Energy can follow many different paths.
When an organism eats another organism, it gains energy.
Producers have the least amount of available energy.
Energy always follows a single path.

The influenza virus cause the flu, but not other diseases. why?

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Areal dna molecule consists of thousands of these pairs of nucleotides. what is the pairing arrangement of the nitrogen bases