The problem(s) with using sludge as a fertilizer is/are the
A. presence of heavy metals and similar pollutants.
B. presence of pathogenic organisms and viruses.
C. inhibitory effect it has on plant growth.
D. stimulatory effect it has on methane production.
E. presence of heavy metals and similar pollutants AND presence of pathogenic organisms and viruses.
E
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How can we explain that water is a solvent?
A. Water is a heavy substance, and as such can disrupt pre-existing bonds. B. Water is highly cohesive and adhesive, which allows it to bind to different substances as a solvent. C. Water has a polar nature, and as such its polar molecules will bind to substances that have positive or negative charges. D. Water is very dense in its liquid state, which allows it to bind to different substances as a solvent.
A fecundity table is constructed for a gray squirrel as follows
________________________ x lx bx lxbx 0 1.0 0.0 0.00 1 0.3 2.0 0.60 2 0.15 3.0 0.45 3 0.09 3.0 0.27 4 0.04 2.0 0.08 5 0.01 0.0 0.00 On the basis of these calculations, the net reproductive rate (R0 ) is equal to A) 1.4. B) 1.59. C) 10. D) 15.
One of the Hardy-Weinberg assumptions states that all genotypes in the population are free of selective advantage. What influence might a selective advantage of a genotype have on a Hardy-Weinberg equilibrium?
What will be an ideal response?
Regular use of antibacterial cleaning products
a. Prevents occurrence of infections. b. Is necessary for good health. c. Promotes survival of bacteria that are resistant. d. Prevents bacteria from growing. e. Prevents occurrence of infections, Is necessary for good health, and Prevents bacteria from growing