Answer the following question given this paragraph: Introduction Coral reefs are home to about 25% of all marine species. They are being threatened by climate change, oceanic acidification, and water pollution, all of which change the composition of the solution we know as seawater. Dissolved oxygen in seawater is critical for sea creatures, but as the oceans warm, oxygen becomes less soluble. As the concentration of carbon dioxide in the atmosphere increases, the concentration of carbon dioxide in the oceans increases, contributing to oceanic acidification. Coral reefs are particularly sensitive to the acidification of the ocean, since the exoskeletons of the coral polyps are soluble in acidic solutions. Humans contribute to the changing of seawater composition by allowing agricultural runoff and other forms of pollution to affect our oceans. Solutions are crucial to the processes that sustain life and to many other processes involving chemical reactions. In this chapter, we will consider the nature of solutions, and examine factors that determine whether a solution will form and what properties it may have. In addition, we will discuss colloidssystems that resemble solutions but consist of dispersions of particles somewhat larger than ordinary molecules or ions. Q: Dissolved oxygen in seawater is critical for sea creatures, but as the oceans warm, oxygen becomes less what? Choices: - insoluble - abundant - saturated - soluble A:
soluble
Answer the following question given this paragraph: The differences in the biomes are due to differences in the abiotic factors , especially climate. Climate is the typical weather in an area over a long period of time. The climate includes the amount of rainfall and the average temperature in the region. Obviously, the climate in the desert is much different than the climate in the rainforest. As a result, different types of plants and animals live in each biome. Q: The differences in the biomes is due to differences in the what factors? Choices: - biological - temperature - air quality - abiotic A:
abiotic
Q: Answer the following question given this paragraph: The rock of the mantle is mostly peridotite. Peridotite is formed of crystals of olivine (green) and pyroxene (black). Q: The rock of the mantle is mostly what? Choices: - metamorphic - crystalline - silicon - peridotite A:
A: peridotite
Question: Answer the following question given this paragraph: Sensory organs such as the eyes contain cells called sensory receptors that respond to particular sensory stimuli. Q: Sensory organs that respond to particular sensory stimuli contain cells called what? Choices: - artificial receptors - stimulus receptor - whole receptors - sensory receptors A:
Answer: sensory receptors
*Question*
Answer the following question given this paragraph: Thermoregulation Animals can be divided into two groups: those that maintain a constant body temperature in the face of differing environmental temperatures, and those that have a body temperature that is the same as their environment and thus varies with the environmental temperature. Animals that do not have internal control of their body temperature are called ectotherms. The body temperature of these organisms is generally similar to the temperature of the environment, although the individual organisms may do things that keep their bodies slightly below or above the environmental temperature. This can include burrowing underground on a hot day or resting in the sunlight on a cold day. The ectotherms have been called cold-blooded, a term that may not apply to an animal in the desert with a very warm body temperature. An animal that maintains a constant body temperature in the face of environmental changes is called an endotherm. These animals are able to maintain a level of activity that an ectothermic animal cannot because they generate internal heat that keeps their cellular processes operating optimally even when the environment is cold. Q: Animals that do not have internal control of their body temperature are called what? Choices: - athermal - photophores - cold-blooded - ectotherms A:
**Answer**
ectotherms
*Question*
Answer the following question given this paragraph: The building blocks of DNA are nucleotides. The important components of the nucleotide are a nitrogenous base, deoxyribose (5-carbon sugar), and a phosphate group (Figure 14.5). The nucleotide is named depending on the nitrogenous base. The nitrogenous base can be a purine such as adenine (A) and guanine (G), or a pyrimidine such as cytosine (C) and thymine (T). Q: What are the building blocks of dna? Choices: - prokaryotes - peptides - genes - nucleotides A:
**Answer**
nucleotides