Question 4 of 5 A student investigated the factors that affect math grades. Which statement
from the lab report best represents a conclusion for this investigation?
A. Olivia will continue to get high grades if she spends 2 hours
studying every night.
B. If students spend less than 1 hour per night studying math, they
will get a grade of 75 or lower.
C. When students spend too much time studying math, their grades
in other subjects will be lower.
D. Students who spend less time studying after school get lower
math grades.
SUBMIT

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.