In one paragraph, describe the research methods used in this study and why you believe they were chosen. be sure to use key terms such as cross-sectional research, longitudinal research, data collection, observation, case studies, questionnaires, and experimentation, as they apply. your answer should include at least two of these key terms. in one paragraph, discuss the research findings. does the study support genetics (nature) or environment (nurture) as a stronger influence on human development? use information from the article and the lesson to support your response.

the correct answer is b

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101