The lineage that produced chimpanzees and humans split from other primates roughly 30 million years ago. Chimpanzees' skulls have the following features: Trait A, found in fossils as old as 10 to 12 million years, is molars with thick enamel. Trait B, found in fossils as old as 55 million years, is a postorbital wall that ventrally separates the orbit from the temporal fossa. Which of the following statements is TRUE? a. Trait A is more beneficial for chimpanzee survival because it is newer.
b. Trait B is more beneficial for chimpanzee survival because it is older.
c. Trait Ais more likely to be widespread among other primate species because it is newer.
d. Tralt is more likely to bo widespread among other primato species because it is older.

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic

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