the cells that form from the first few divisions of a fertilized egg cell can develop into any cell in the human body or the placenta. what kind of stem cell are these

The invention of agriculture a. led to an increased birth rate and death rate. b. provided a more dependable food supply. c. allowed people to settle down in villages. d. all of the above

Reproduce sexually and asexually have vascular systems became established on land long before animals, what are they?

What is a purpose of a buffer in the body? A) to prevent capillary action B) to prevent sudden changes in pH C) to prevent sudden changes in temperature D) to prevent the formation of surface tension

The modern genetic definition of biological evolution is

Which two moods are used for situations that are contrary to fact or for the conditions under which a situation might occur? subjunctive and interrogative conditional and imperative subjunctive and conditional interrogative and indicative

What types of organism uses and produces both oxygen and carbon dioxide?

What trait is recessive when you have a male rabbit with black fur and a female rabbit with tan fur

Cell is to tissue as A) cell is to organ system B) organ system is to Tissue C) Organ system is to organ D) tissue is to organ

Which of the following is composed of myosin protein? hick filaments thin filaments Z discs all myofilaments

Sex determination in mammala