The process of intramembranous ossification generates bone within a pre-existing template composed of mesenchymal tissue. in contrast, endochondral ossification generates bone within a pre-existing template composed of

hyaline cartilage
periosteum
articular cartilage
adipose tissue

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.

Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody

Everything in the universe originated from a single point. how was it possible for everything in the universe to have occupied a single point in space?