Which of the following has increased as a direct result of stratospheric ozone depletion?
a. CO2
b. UVB
c. CFCs
d. nitrous oxides
e. sulfur oxides
B
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What common life characteristic would cells from a daisy, an apple and a dog all have?
A. DNA B. tissues C. organs D. viruses
Filoviruses (such as Ebola virus) that cause severe hemorrhagic fevers generally have high ________ but low ________
A) incidence / prevalence B) prevalence / mortality C) mortality / morbidity D) morbidity / mortality
In this figure, the genotype of the resistant parental bollworms is while the susceptible parental bollworms have a genotype.
In these data, the parental generation characteristics (resistant or susceptible) are shown at the top.
A. Rr; RR
B. Rr; rr
C. RR; rr
D. rr; RR
E. RR; Rr
Retroviruses are characterized by ____
a. RNA that is used as a template to produce DNA in a host cell b. integrating RNA into the host’s chromosome c. the enzyme alkaline phosphatase d. having one strain that causes H1N1 e. the lack of a protein coat