Q: An ecosystem consists of all the living things and what? Read this paragraph and choose the correct option from the provided answers: An ecosystem consists of all the living things ( biotic factors ) in a given area, together with the nonliving environment ( abiotic factors ). The nonliving environment includes water, sunlight, soil, and other physical factors. Choices: - living environment - phosphorescent environment - local environment - nonliving environment A:
nonliving environment

Q: _________ are one-celled organisms with a nucleus which cause diseases such as malaria. Read this paragraph and choose the correct option from the provided answers: Protozoa are one-celled organisms with a nucleus, making them eukaryotic organisms. They cause diseases such as malaria. Malaria is a serious disease that is common in warm climates. The protozoa infect people when they are bit by a mosquito. More than a million people die of malaria each year. Other protozoa cause diarrhea. An example is Giardia lamblia ( Figure below ). Choices: - fungi - mosquitos - larvae - protozoa A:
protozoa

Q: Q: Objects in motion that return to the same position after a fixed period of time are said to be in what? Read this paragraph and choose the correct option from the provided answers: Objects in motion that return to the same position after a fixed period of time are said to be in harmonic motion. Objects in harmonic motion have the ability to transfer some of their energy over large distances. They do so by creating waves in a medium. Imagine pushing up and down on the surface of a bathtub filled with water. Water acts as the medium that carries energy from your hand to the edges of the bathtub. Waves transfer energy over a distance without direct contact with the initial source. Since waves are disturbances in an existing medium, they are considered phenomena and not actual objects. Choices: - resonant motion - kinetic motion - homeostasis - harmonic motion A:
A: harmonic motion

Question: Q: What body part does encephalitis attack? Read this paragraph and choose the correct option from the provided answers: Encephalitis is a brain infection ( Figure below ). If you have encephalitis, you are likely to have a fever and headache or feel drowsy and confused. The disease is most often caused by viruses. The immune system tries to fight off a brain infection, just as it tries to fight off other infections. But sometimes this can do more harm than good. The immune system's response may cause swelling in the brain. With no room to expand, the brain pushes against the skull. This may injure the brain and even cause death. Medicines can help fight some viral infections of the brain, but not all infections. Choices: - lungs - liver - heart - brain A:
Answer: brain

*Question*
Q: What are gemstones known as when light cannot pass through them? Read this paragraph and choose the correct option from the provided answers: Most gemstones are not used exactly as they are found in nature. Usually, gems are cut and polished. Figure below shows an uncut piece of ruby and a ruby that has been cut and polished. The way a mineral splits along a surface allows it to be cut to produce smooth surfaces. Notice that the cut and polished ruby sparkles more. Gems sparkle because light bounces back when it hits them. These gems are cut so that the most amount of light possible bounces back. Other gemstones, such as turquoise, are opaque, which means light does not pass through them. These gems are not cut in the same way. Choices: - inorganic - blocking - protective - opaque A:
**Answer**
opaque

*Question*
Q: The existence of (virtual) photons is possible only by virtue of the heisenberg uncertainty principle and can travel an unlimited distance, so the range ofthe electromagnetic for is what? Read this paragraph and choose the correct option from the provided answers: CRITICAL THINKING QUESTIONS 19. How are neurons similar to other cells? How are they unique? 20. Multiple sclerosis causes demyelination of axons in the brain and spinal cord. Why is this problematic?. Choices: - finite - simple - generated - infinite A:
**Answer**
infinite