Q: Although humans require it, what accounts for just one percent of all water on earth? Read this paragraph and choose the correct option from the provided answers: All living things need water. For most human uses, water must be fresh. Of all the water on Earth, only 1 percent is fresh, liquid water. Most of the rest of Earth's water is either salt water in the ocean or ice in glaciers and ice caps. Choices: - snow - salt water - glaciers - fresh water A:
fresh water

(Question)
Q: What strong and lightweight manmade material is derived from hydrocarbons and used in ropes, tents and parachutes? Read this paragraph and choose the correct option from the provided answers: nylon: Human-made fabric. Material is made from hydrocarbons found in petroleum products. It is found in a number of plastic utensils. Taking advantages of its strength and light weight, nylon is a component of ropes, fishing nets, tents, and parachutes. Choices: - styrofoam - cellophane - aluminum - nylon A:
(Answer)
nylon

Ques: Q: What type of tissue makes up much of the inside of a plant? Read this paragraph and choose the correct option from the provided answers: Ground tissue makes up much of the inside of a plant. The cells of ground tissue carry out basic metabolic functions and other biochemical reactions. Ground tissue may also store food or water. Choices: - leaf tissue - stem tissue - working tissue - ground tissue A:
Ans: ground tissue

(Q).
Q: When does the diploid zygote form? Read this paragraph and choose the correct option from the provided answers: Chapter 26 1 Figure 26.8 B. The diploid zygote forms after the pollen tube has finished forming, so that the male generative nuclei can fuse with the female gametophyte. 3 D 5 C 7 A 9 B 11 C 13 B 15 C 17 D 19 Both pollination and herbivory contributed to diversity, with plants needing to attract some insects and repel others. 21 The trees are adapted to arid weather, and do not lose as much water due to transpiration as non-conifers. 23 The resemblance between cycads and palm trees is only superficial. Cycads are gymnosperms and do not bear flowers or fruit. Cycads produce cones: large, female cones that produce naked seeds, and smaller male cones on separate plants. Palms do not. 25 Using animal pollinators promotes cross-pollination and increases genetic diversity. The odds that the pollen will reach another flower are greatly increased compared with the randomness of wind pollination. Choices: - never - before the pollen tube - before the haploid zygote - after the pollen tube A:
(A).
after the pollen tube

Ques:Q: Oxygen reaches what veinless part of the eye by diffusing through its tear layer? Read this paragraph and choose the correct option from the provided answers: 12.7 Molecular Transport Phenomena: Diffusion, Osmosis, and Related Processes 62. You can smell perfume very shortly after opening the bottle. To show that it is not reaching your nose by diffusion, calculate the average distance a perfume molecule moves in one second in air, given its diffusion constant D to be 1.0010 6 m 2 /s . What is the ratio of the average distances that oxygen will diffuse in a given time in air and water? Why is this distance less in water (equivalently, why is D less in water)? 64. Oxygen reaches the veinless cornea of the eye by diffusing through its tear layer, which is 0.500-mm thick. How long does it take the average oxygen molecule to do this? 65. (a) Find the average time required for an oxygen molecule to diffuse through a 0.200-mm-thick tear layer on the cornea. 3 (b) How much time is required to diffuse 0.500 cm of oxygen to the cornea if its surface area is 1.00 cm 2 ? 66. Suppose hydrogen and oxygen are diffusing through air. A small amount of each is released simultaneously. How much time passes before the hydrogen is 1.00 s ahead of the oxygen? Such differences in arrival times are used as an analytical tool in gas chromatography. Choices: - retina - pupil - membranes - cornea A:

Ans:cornea

Ques: Q: Typically hard, high-melting solids that conduct heat and electricity well, the transition elements have many properties in common with other what? Read this paragraph and choose the correct option from the provided answers: The transition elements have many properties in common with other metals. They are almost all hard, high-melting solids that conduct heat and electricity well. They readily form alloys and lose electrons to form stable cations. In addition, transition metals form a wide variety of stable coordination compounds, in which the central metal atom or ion acts as a Lewis acid and accepts one or more pairs of electrons. Many different molecules and ions can donate lone pairs to the metal center, serving as Lewis bases. In this chapter, we shall focus primarily on the chemical behavior of the elements of the first transition series. Choices: - oils - deposits - organics - metals A:
Ans:
metals