Answer the following question given this paragraph: One of the earliest air pumps was made by Robert Boyle. The figure below is a diagram of his early pump. Q: One of the earliest air pumps was made by? Choices: - Isaac Newton - Galileo - Niels Bohr - robert boyle A:
robert boyle
(Question)
Answer the following question given this paragraph: Cycle of Sexual Reproduction. Sexual reproduction involves the production of haploid gametes by meiosis. This is followed by fertilization and the formation of a diploid zygote. The number of chromosomes in a gamete is represented by the letter n. Why does the zygote have 2n, or twice as many, chromosomes?. Q: Sexual reproduction involves the production of haploid gametes by what? Choices: - lesions - mutations - mitosis - meiosis A:
(Answer)
meiosis
Ques: Answer the following question given this paragraph: Radiation is the transfer of thermal energy by waves that can travel through empty space. When the waves reach objects, they transfer thermal energy to the objects. This is how the sun's energy reaches and warms Earth. Q: What is the transfer of thermal energy by waves that can travel through empty space called? Choices: - convection - induction - vibration - radiation A:
Ans: radiation
(Q).
Answer the following question given this paragraph: A lymphocyte is the type of white blood cell involved in an immune system response. You can see what a lymphocyte looks like, greatly magnified, in Figure below . Lymphocytes make up about one quarter of all white blood cells, but there are trillions of them in the human body. Usually, fewer than half of the body's lymphocytes are in the blood. The majority are in the lymph, lymph nodes, and lymph organs. Q: A lymphocyte is the type of which cell involved in an immune system response? Choices: - red blood cell - white immunity cell - white brain cell - white blood cell A:
(A).
white blood cell
Ques:Answer the following question given this paragraph: Avian Respiration Birds have evolved a respiratory system that enables them to fly. Flying is a high-energy process and requires a lot of oxygen. Furthermore, many birds fly in high altitudes where the concentration of oxygen in low. How did birds evolve a respiratory system that is so unique? Decades of research by paleontologists have shown that birds evolved from therapods, meat-eating dinosaurs (Figure 39.14). In fact, fossil evidence shows that meat-eating dinosaurs that lived more than 100 million years ago had a similar flow-through respiratory system with lungs and air sacs. Archaeopteryx and Xiaotingia, for example, were flying dinosaurs and are believed to be early precursors of birds. Q: Birds have evolved a respiratory system that enables them to fly. flying is a high-energy process and requires a lot of this? Choices: - weight - nitrogen - adaptation - oxygen A:

Ans:oxygen
Question: Answer the following question given this paragraph: For individuals to cooperate, they need to communicate . Animals can communicate with sounds, chemicals, or visual cues. For example, to communicate with sounds, birds sing and frogs croak. Both may be communicating that they are good mates. Ants communicate with chemicals called pheromones . For example, they use the chemicals to mark trails to food sources so other ants can find them. Male dogs use pheromones in urine to mark their territory. They are "telling" other dogs to stay out of their yard. You can see several examples of visual communication in Figure below . Q: Sounds, chemicals, and visual cues are examples of what between animals? Choices: - migration - circulation - procreation - communication A:
Answer:
communication