Answer the following question given this paragraph: Ecologists look at many factors that help to describe a population. First, ecologists can measure the number of individuals that make up the population, known as population size . They can then determine the population density , which is the number of individuals of the same species in an area. Population density can be expressed as number per area , such as 20 mice/acre, or 50 rabbits/square mile. Q: How is population density expressed? Choices: - per arable land - number per household - arable land per capita - number per area A:
number per area
(Question)
Answer the following question given this paragraph: Q: What specific part of the african violet is used to propagate other plants? Choices: - petals - spores - roots - leaves A:
(Answer)
leaves
Ques: Answer the following question given this paragraph: Clouds are needed for precipitation. Precipitation is water that falls from the sky. This may fall as liquid water, mostly as rain . It may fall also as frozen water, such as snow. Q: What is the water that falls from the sky called? Choices: - evaporation - condensation - moisture - precipitation A:
Ans: precipitation
(Q).
Answer the following question given this paragraph: In an earthquake, seismic waves are generated by rock displacement. Q: During an earthquake what causes seismic waves? Choices: - Currents - low tide - high winds - rock displacement A:
(A).
rock displacement
Ques:Answer the following question given this paragraph: Q: What regulates homeostasis and basic survival behaviors? Choices: - hippocampus - mitosis - cell membrane - hypothalamus A:

Ans:hypothalamus
Question: Answer the following question given this paragraph: Geologists group rocks based on how they form. There are three major rock types. Each will be described in more detail in the coming concepts. Q: Geologists group rocks based on how they what? Choices: - dissove - look - move - form A:
Answer:
form