A bird fluffs its feathers to trap body heat to keep warm during winter months. This is an example of

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems

An organism's reproductive strategy includes all of the following except a. the number of offspring produced. b. the amount of energy expended in producing offspring. c. the length of time parental care is given d. the number of alleles an organism passes on.