The earliest hominid fossil, “Lucy,” is estimated to be 3.2 million years old. This early human-like species shares an important characteristic with modern humans: bipedalism. Which of the following would favor the selection of bipedal posture over walking on all fours? Bipedal posture allowed for greater mobility in the tree canopy.

Bipedal posture allowed arms to be free to develop and use tools.

Bipedal posture allowed for an increase in hominid brain and jaw size.

Bipedal posture allowed a greater number of offspring to be produced in hominids.

Which of the following is a good strategy when it comes to desserts

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease

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