Imagine a different system in which toads had a wide range of variation in color. In some ponds, most of the toads are light in color. In other ponds, the average color is fairly dark. From the options below, select which represent TESTABLE hypotheses that could explain this difference in coloration. Check all that apply: A predator that is present in some ponds prefers one color to the other. Female toads in some ponds prefer darker toads, while females in another pond prefer lighter toads. Toad color is determined by food quality, which varies pond to pond. Toads can change their color, based on their stress level.

There answer is options 1 and 2.

Explanation:

To test the example given in the question where some ponds have toads with darker colors and some with lighter colors, we can select;

1 - Ponds can be observed for the feeding habits of the predators and this can explain why toads with lighter or darker colors are the majority of the population in some ponds.

2 - The mating preferences of the female toads can be observed and examined statistically which can give us a pattern of preference.

The other options can not be selected as testable hypotheses because of the uncontrollable and subjective variables such as the quality of the food or the toad's genes and the stress of the environment of the pond.

I hope this answer helps.

answer: populations of walruses and polar bears will decline

explanation:

you put it

i believe the correct answer is the virus gets an envelope that contains host molecules when it leaves the host cell.

explanation:

during the bidding/release stage of a virus, it encapsulates itself with part of the membrane of the host cells in this case the cells of the monkey and is the reason as to why the scientist found the genetic material of the monkey on the viral cell surface.

further explanation

to understand this answer, we have to know the cycle a virus undergoes to replicate. a virus is basically a bunch of genetic material enclosed in a capsule and lacks any machinery or organelles to ensure their survival so they must enter a host cell in order to get the environment needed to survive. some viruses enter and lyse(destroy) the host cell after they have replicated and undergo the lytic cycle while some enter and leave the cell intact after replicating and these undergo a lysogenic cycle. to enter the cell, they undergo the first process called attachment by binding to specific receptors and co-receptors on the surface of the host cell. after attaching to the cell, they start the second phase called penetration where virus enters or is engulfed whole by the host cell through a process called endocytosis. it is the same process that a cell takes up materials it needs or pathogens around it. uncoating of the virus then happens after the virus has been engulfed and is the third stage. the virus then undergoes releasing of its genetic material in the host's matrix.   the materials then enter the nucleus and undergo biosynthesis by adding themselves in strands of rna being translated and then copies of the virus are produced in addition to the host genetic material. the material/newly formed viral material then undergoes assembly inside the host cell and form a capsule around them. the virus undergoes the last release/budding stage by binding to the host membrane and pushing outwards. in doing so when they tear away from the host membrane, they pick up the genetic material from the membrane of the host cell to form their envelope.

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level: high school