Small amounts of hormones have large effects on an organism's physiology because the signals are amplified between glands and tissues in an endocrine axis and within the signal transduction systems of individual cells.

a. true
b. false

Which of these statements is false? a. others may notice a problem with a relationship before the people involved. b. the first sign of a problem with a relationship is a feeling of anger. c. damaged relationships can be repaired. d. even good relationships can be damaged.

Amines amides and amino acids are categories of

Which of the following forest management practices is best for reestablishing areas of forest?