Answer the following question given this paragraph: One trait the sponge and tarantula share is lack of a backbone. In fact, they don't have any bones at all. These are defining traits of all invertebrates. Some invertebrates have a skeleton, but it isn't made of bone. Many other traits of invertebrates show considerable diversity. Q: What is one trait that the sponge and tarantula share? Choices: - lack of ogranic - lack of a emerge - lack of a cycle - lack of a backbone A:
lack of a backbone
(Question)
Answer the following question given this paragraph: Besides social insects, animals in many other species also cooperate. For example, in meerkat colonies, young female meerkats act as babysitters. They take care of the baby meerkats while their parents are out looking for food. Q: What do young female meerkats act as in colonies? Choices: - predators - defenders - midwives - babysitters A:
(Answer)
babysitters
Ques: Answer the following question given this paragraph: Most pure nitrogen comes from the fractional distillation of liquid air. The atmosphere consists of 78% nitrogen by volume. This means there are more than 20 million tons of nitrogen over every square mile of the earth's surface. Nitrogen is a component of proteins and of the genetic material (DNA/RNA) of all plants and animals. Under ordinary conditions, nitrogen is a colorless, odorless, and tasteless gas. It boils at 77 K and freezes at 63 K. Liquid nitrogen is a useful coolant because it is inexpensive and has a low boiling point. Nitrogen is very unreactive because of the very strong triple bond between the nitrogen atoms. The only common reactions at room temperature occur with lithium to form Li3N, with certain transition metal complexes, and with hydrogen or oxygen in nitrogenfixing bacteria. The general lack of reactivity of nitrogen makes the remarkable ability of some bacteria to synthesize nitrogen compounds using atmospheric nitrogen gas as the source one of the most exciting chemical events on our planet. This process is one type of nitrogen fixation. In this case, nitrogen fixation is the process where organisms convert atmospheric nitrogen into biologically useful chemicals. Nitrogen fixation also occurs when lightning passes through air, causing molecular nitrogen to react with oxygen to form nitrogen oxides, which are then carried down to the soil. Q: What term describes the process where organisms convert atmospheric nitrogen into biologically useful chemicals? Choices: - carbon cycle - cellular respiration - photosynthesis - nitrogen fixation A:
Ans: nitrogen fixation
(Q).
Answer the following question given this paragraph: Electric charge is found only in a conductor. Q: Where is the only place an electric charge can be found? Choices: - translator - ion - neuron - conductor A:
(A).
conductor
Ques:Answer the following question given this paragraph: Carbohydrates, proteins, and nucleic acids are large molecules (macromolecules) built from smaller molecules (monomers) through dehydration reactions. In a dehydration reaction, water is removed as two monomers are joined together. Q: In a dehydration reaction, what is removed as two monomers are joined together? Choices: - carbon - air - nitrogen - water A:

Ans:water
Answer the following question given this paragraph: Lobe-fined fish are currently far fewer in number than ray-finned fish. Their fins, like the one shown in Figure above , contain a stump-like appendage of bone and muscle. There are two groups of lobe-finned fish still alive today: coelacanths and lungfish. Q: What are two types of lobe finned fish? Choices: - sharks and piranha - piranha and pike - moles and lungfish - coelacanths and lungfish A:
coelacanths and lungfish