White short-horned cattle and black angus cattle have been crossed to produce offspring with superior beef and rapid grown qualities. This process of choosing organisms with the most desirable traits for mating known as

Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources

What is a food web? a. the structure used to trap food b. a set of complex carbohydrates c. a group of interconnected food chains d. the pattern of food nutrition

Which of the following is true? a. under the current unemployment insurance system, benefits replace about 90 percent of the typical worker's prior pretax earnings. b. high benefit payments to unemployed workers will tend to increase the rate of unemployment. c. if a system of personal savings accounts replaced the current unemployment benefit system, the unemployment rate would fall to zero. d. the rate of unemployment in the large european economies has been persistently lower than that of the united states due to their more generous unemployment benefits.