What are the traits that tell you a pig, fish and human share a common ancestor comparing their late development of embryos?

What types of energy transfers and energy transportations are involved in the domino chain reaction?

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.