Answer the following question given this paragraph: Like Earth, the Moon has a distinct crust, mantle, and core. The crust is composed of igneous rock. This rock is rich in the elements oxygen, silicon, magnesium, and aluminum. On the near side, the Moon's crust is about 30 kilometers thick. On the far side, the crust is about 100 kilometers thick. The mantle is made of rock like Earth's upper mantle. The Moon has a small metallic core, perhaps 300 to 500 kilometers in diameter. The composition of the core is probably mostly iron with some sulfur and nickel. We learned this both from the rock samples gathered by astronauts and from spacecraft sent to the Moon. Q: What is the earths crust composed of? Choices: - sedimentary rock - bicellular rock - metamorphic rock - igneuos rock A:
igneuos rock
(Question)
Answer the following question given this paragraph: Levels of organization, from the atom (smallest) to the organism (largest). Notice that organelles are inside a cell, and organs are inside an organism. Q: What is the largest level of organization? Choices: - organelle - genome - protein - organism A:
(Answer)
organism
Ques: Answer the following question given this paragraph: Bacteria in food or water usually can be killed by heating it to a high temperature. Generally, this temperature is at least 71 C (160 F). Bacteria on surfaces such as countertops and floors can be killed with disinfectants, such as chlorine bleach. Bacterial infections in people can be treated with antibiotic drugs . These drugs kill bacteria and may quickly cure the disease. If you've ever had strep throat, you were probably prescribed an antibiotic to treat it. Q: What helps treat bacterial infections in people? Choices: - respiratory drugs - vaccines - rest - antibiotic drugs A:
Ans: antibiotic drugs
(Q).
Answer the following question given this paragraph: Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants. Figure below shows the hands of several different mammals. They all have the same basic pattern of bones. They inherited this pattern from a common ancestor. However, their forelimbs now have different functions. Q: What do we call structures that are similar in related organisms because they were inherited from a common ancestor? Choices: - monogamous - polylogous - filamentous - homologous A:
(A).
homologous
Ques:Answer the following question given this paragraph: Most waves approach the shore at an angle. The part of the wave that is nearer the shore reaches shallow water sooner than the part that is farther out. The shallow part of the wave "feels" the bottom first. This slows down the inshore part of the wave and makes the wave "bend. " This bending is called refraction . Q: What three characteristics do waves have? Choices: - structure , refraction and deflection - theory , refraction and deflection - spin, refraction, and deflection - reflection, refraction and deflection A:

Ans:reflection, refraction and deflection
Ques: Answer the following question given this paragraph: Leaves are rich in chloroplasts that function as solar collectors and food factories. The first leaves were very small, but leaves became larger over time. Q: What are in leaves that function as solar collectors and food factories? Choices: - cellulose - vacuoles - fibroblasts - chloroplasts A:
Ans:
chloroplasts