Answer the following question given this paragraph: In its most general form, concentration describes the number of items in a given area or volume. The units generally depend on the types of items being counted. For example, if we were to calculate the concentration of people that live in a city, we would divide the total number of people by the area. If we measured the area in square miles, the units of concentration for this measurement would be people per square mile. Or, we could determine the concentration of fish in a lake by dividing the total number of fish by the volume of the lake. If we measure the volume in cubic meters, the concentration would have units of fish per cubic meter. Q: What term describes the number of items in a given area or volume? Choices: - alkalinity - fraction - density - concentration A:
concentration
(Question)
Answer the following question given this paragraph: Traits that are affected by more than one gene are called polygenic traits . The genes that affect a polygenic trait may be closely linked on a chromosome, unlinked on a chromosome, or on different chromosomes. Polygenic traits are often difficult for geneticists to track because the polygenic trait may have many alleles. Also, independent assortment ensures the genes combine differently in gametes. Therefore, many different intermediate phenotypes exist in offspring. Eye color ( Figure below ), and skin color are examples of polygenic traits in humans. Q: Traits that are affected by more than one gene are what type of traits? Choices: - monogenetic - recessive - dominant - polygenic traits A:
(Answer)
polygenic traits
Ques: Answer the following question given this paragraph: Silver and ordinary table salt are two examples of chemical substances . A substance is matter that has a uniform and definite composition. All samples of substances, sometimes called pure substances, have identical properties. When chemists run a chemical reaction, they want to use pure materials so they know exactly what they are dealing with. They know that the reaction involves a specific substance, so they expect the same reaction to give the same results each time it is run. Q: Silver and ordinary table salt are two examples of chemical what? Choices: - organism - impurities - microbes - substances A:
Ans: substances
(Q).
Answer the following question given this paragraph: As the fast-moving cold air mass keeps advancing, so does the cold front. Cold fronts often bring sudden changes in the weather. There may be a thin line of storms right at the front that moves as it moves. In the spring and summer, the storms may be thunderstorms and tornadoes. In the late fall and winter, the storms may bring snow. After a cold front passes, the cold air mass behind it brings cooler temperatures. The air is likely to be less humid as well. Can you explain why?. Q: What type of fronts often bring sudden changes in the weather, including different types of precipitation, depending on the season? Choices: - stationary fronts - occluded fronts - warm fronts - cold fronts A:
(A).
cold fronts
Ques:Answer the following question given this paragraph: Ganglia A ganglion is a group of neuron cell bodies in the periphery. Ganglia can be categorized, for the most part, as either sensory ganglia or autonomic ganglia, referring to their primary functions. The most common type of sensory ganglion is a dorsal (posterior) root ganglion. These ganglia are the cell bodies of neurons with axons that are sensory endings in the periphery, such as in the skin, and that extend into the CNS through the dorsal nerve root. The ganglion is an enlargement of the nerve root. Under microscopic inspection, it can be seen to include the cell bodies of the neurons, as well as bundles of fibers that are the posterior nerve root (Figure 13.19). The cells of the dorsal root ganglion are unipolar cells, classifying them by shape. Also, the small round nuclei of satellite cells can be seen surroundingas if they were orbitingthe neuron cell bodies. Q: What is a group of neuron cell bodies in the periphery called? Choices: - crystals - organism - gangism - ganglion A:

Ans:ganglion
Ques:Answer the following question given this paragraph: Q: What makes a complete orbit around the earth once every 29 1/2 days? Choices: - Mars - the Sun - Gemini - the moon A:

Ans:
the moon