Answer the following question given this paragraph: The focal length , , of a lens or mirror is the distance from the surface of the lens or mirror to the place where the light is focused. This is called the focal point or focus . For diverging lenses or mirrors, the focal length is negative. Q: What type of lens and mirrors have a negative focal length? Choices: - converging - convexing - subverging - diverging A:
diverging
Answer the following question given this paragraph: Break down some substances in food that cannot be digested, such as fiber and some starches and sugars. Bacteria produce enzymes that digest carbohydrates in plant cell walls. Most of the nutritional value of plant material would be wasted without these bacteria. These help us digest plant foods like spinach. Q: What produces enzymes that digest carbohydrates in plant cell walls? Choices: - pollen - protists - algae - bacteria A:
bacteria
Q: Answer the following question given this paragraph: One way mucous membranes protect the body is by producing mucus. Mucus is a sticky, moist secretion that covers mucous membranes. The mucus traps pathogens and particles so they can't enter the body. Q: A sticky, moist secretion that covers mucous membranes is called what? Choices: - sweat - pus - saliva - mucus A:
A: mucus
Question: Answer the following question given this paragraph: Thalamus The thalamus is a collection of nuclei that relay information between the cerebral cortex and the periphery, spinal cord, or brain stem. All sensory information, except for the sense of smell, passes through the thalamus before processing by the cortex. Axons from the peripheral sensory organs, or intermediate nuclei, synapse in the thalamus, and thalamic neurons project directly to the cerebrum. It is a requisite synapse in any sensory pathway, except for olfaction. The thalamus does not just pass the information on, it also processes that information. For example, the portion of the thalamus that receives visual information will influence what visual stimuli are important, or what receives attention. The cerebrum also sends information down to the thalamus, which usually communicates motor commands. This involves interactions with the cerebellum and other nuclei in the brain stem. The cerebrum interacts with the basal nuclei, which involves connections with the thalamus. The primary output of the basal nuclei is to the thalamus, which relays that output to the cerebral cortex. The cortex also sends information to the thalamus that will then influence the effects of the basal nuclei. Q: The primary output of the basal nuclei is to the thalamus, which relays that output to where? Choices: - effect cortex - Back cortex - suffering cortex - cerebral cortex A:
Answer: cerebral cortex
*Question*
Answer the following question given this paragraph: As erosion by groundwater continues, the ceiling of a cave may collapse. The rock and soil above it sink into the ground. This forms a sinkhole on the surface. You can see an example of a sinkhole in Figure below . Some sinkholes are big enough to swallow vehicles and buildings. Q: What is formed when the ceiling of an underground cave collapses? Choices: - hill - groundwater - mountain - sinkhole A:
**Answer**
sinkhole
*Question*
Answer the following question given this paragraph: Q: Species distributions are a consequence of both ecological and evolutionary what? Choices: - fluctuations - particles - isolation - interactions A:
**Answer**
interactions