Which of the following statements about opossums is true? a. opossums do not give birth to live young. b. opossums are mainly active during the day. c. opossums play dead to evade predators. d. opossums are similar in size to squirrels.

c. Opossums play dead to evade predators.

Explanation:

Opossums are marsupials and endemic to the regions of America. They are known to display a very unique physiological behavior of playing dead whenever they are under stress due to encounter with a predator. Playing dead is an involuntary response which occurs automatically in the body of opossums which may last from 40 minutes to 4 hours.

Rest of the options are wrong because opossums are viviparous not oviparous. They are nocturnal i.e. active during night & inactive during daytime. They are bigger in size as compared to squirrels.

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg