In the African savanna of southern Kenya there are many cats, such as lions, cheetahs, and leopards. There are also hoofed animals, including zebras, giraffes, and gazelles. The vegetation in the savanna consists of many types of grasses with occasional acacia and baobab trees. The lion and the cheetah both prey upon the gazelle. The lion is a nocturnal hunter while the cheetah prefers to hunt in the early morning or afternoon. This is an example of

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Onsider the paragraph above. what is one chemical property of water? a) water is a polar molecule. b) water is the universal solvent. c) water reacts with group 1 metals. d) water has a high specific heat capacity.

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.