Which scientific design has limitations due to oversimplification?
a. in a study of the interaction of air quality and crop yields, a computer compiles data that are collected by farmers from countries around the world.
b. in a study of the effectiveness of a new drug on cholesterol, rhesus monkeys receive different strengths of the drug over a period of six weeks.
c. in a study of the relationships between plants and their pollinators, researchers observe twenty plant plots in a meadow every day for three months.
d. in a study of the effect of lawn fertilizer on the health of a backyard pond, biologists grow two colonies of duckweed in a large flask to represent pond ecosystems.

"follow hollywood's hottest diet craze to use more calories and feel great" this article most likely a) provides an easy-to-follow nutrition plan b) includes recommendations that are unsafe c) gives expert advice on creating a healthy lifestyle d) sets a realistic goal for health and weight loss

The herpes viruses are important enveloped dna viruses that cause disease in vertebrates and in some invertebrates such as oysters. some of the human forms are herpes simplex virus (hsv) types i and ii, causing facial and genital lesions, and the varicella zoster virus (vsv), causing chicken pox and shingles. each of these three actively infects nervous tissue. primary infections are fairly mild, but the virus is not then cleared from the host; rather, viral genomes are maintained in cells in a latent phase. the virus can later reactivate, replicate again, and infect others.in electron micrographs of hsv infection, it can be seen that the intact virus initially reacts with cell surface proteoglycans, then with specific receptors. this is later followed by viral capsids docking with nuclear pores. afterward, the capsids go from being full to being "empty." which of the following best fits these observations? a) viral capsids are needed for the cell to become infected; only the capsids enter the nucleus.b) the viral envelope is not required for infectivity, since the envelope does not enter the nucleus.c) only the genetic material of the virus is involved in the cell's infectivity, and is injected like the genome of a phage.d) the viral envelope mediates entry into the cell, the capsid mediates entry into the nuclear membrane, and the genome is all that enters the nucleus.

Which is not a physical sign of stress? a )pupils dilate b) breathing becomes faster and deeper c) kidneys and liver constrict d) spending money