Answer the following question given this paragraph: All crocodilians are carnivores. They feed on live animals such as birds, small mammals and fish. Crocodilians use several methods of attack when pursuing live prey. One approach is that of the ambush. The crocodilian lies motionless beneath the water's surface with only their nostrils above the water line. This keeps them concealed while they watch for prey that approaches the water's edge. The crocodilian then lunges out of the water, taking their prey by surprise and dragging it from the shoreline into deep water where the prey is killed. Q: With a diet of live animals such as birds, small mammals and fish, all crocodilians are considered what? Choices: - omnivores - symbiotes - predators - carnivores A:
carnivores
(Question)
Answer the following question given this paragraph: Air conditioning systems that can incubate certain bacteria and mold. Q: Air conditioning systems can incubate certain bacteria and what else? Choices: - Cancer - wood - root - mold A:
(Answer)
mold
Ques: Answer the following question given this paragraph: Hemoglobin of the Fetus The fetus has its own circulation with its own erythrocytes; however, it is dependent on the mother for oxygen. Blood is supplied to the fetus by way of the umbilical cord, which is connected to the placenta and separated from maternal blood by the chorion. The mechanism of gas exchange at the chorion is similar to gas exchange at the respiratory membrane. However, the partial pressure of oxygen is lower in the maternal blood in the placenta, at about 35 to 50 mm Hg, than it is in maternal arterial blood. The difference in partial pressures between maternal and fetal blood is not large, as the partial pressure of oxygen in fetal blood at the placenta is about 20 mm Hg. Therefore, there is not as much diffusion of oxygen into the fetal blood supply. The fetus' hemoglobin overcomes this problem by having a greater affinity for oxygen than maternal hemoglobin (Figure 22.27). Both fetal and adult hemoglobin have four subunits, but two of the subunits of fetal hemoglobin have a different structure that causes fetal hemoglobin to have a greater affinity for oxygen than does adult hemoglobin. Q: How is blood supplied from the mother to the fetus? Choices: - brain stem - vagina - spinal cord - umbilical cord A:
Ans: umbilical cord
(Q).
Answer the following question given this paragraph: Water can be a solid, liquid, or a gas. Q: Water can be a solid, liquid, and what other form? Choices: - ooze - square - plasma - gas A:
(A).
gas
Ques:Answer the following question given this paragraph: The nucleus is a small, dense region at the center of the atom. It consists of positive protons and neutral neutrons, so it has an overall positive charge. Q: What is the small, dense region at the center of the atom that consists of positive protons and neutral neutrons? Choices: - proton - electron - photon - nucleus A:

Ans:nucleus
Answer the following question given this paragraph: Q: Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what? Choices: - precipitation - oxygen - air pressure - temperature A:
temperature