In nuclear power plants, atoms are split during fission reactions to produce an enormous amount of heat. This heat changes pure water into steam, and the steam is used to turn a series of turbines connected to an electric generator. To cool the steam and condense it back into water so it can be used again, excess heat must be absorbed using water from a separate source. In "once-through" cooling systems, water is pulled from a nearby body of water, used to condense the steam, and pumped back into the same body of water at an increased temperature. In many cases, once-through cooling systems can cause the temperature of the entire body of water to increase, which can disrupt aquatic ecosystems.

A diagram of a nuclear reactor with a once-through cooling system is shown below. In the diagram, warmer water is shown in red and cooler water is shown in blue.

once-through%20cooling%20system

Suppose the operators of a nuclear power plant want to modify their once-through cooling system to reduce the plant's impact on nearby aquatic ecosystems without affecting the system's cooling capabilities. A viable solution would most likely reduce the
of water entering the

Which of the following statements best describes the relationship between the environment and human health? a. the environment is the only factor that affects human health. b. many aspects of the environment can have an impact on human health. c. human health is impacted by changes in climate. d. the environment has no impact on human health. select the best answer from the choices provided

~~16. while watching a special on animals, brianna discovers that hares tend to lose heat through their ears. based on this and what is known about surface-to-volume ratios, propose an explanation as to why hares that live in hot climates (such as the desert) have large, extended ears

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses. cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown. cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan. cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan. select the correct statements regarding the mode of inheritance of the coat color genes. a) both genes are x-linked. b) both genes are autosomal. c) one of the genes modifies the expression of the other gene. d) each gene has an additive effect on the intensity of coat color. e) each gene independently specifies three colors. f) one of the genes is autosomal, and the other is x-linked.