Suppose a male bird has enough resources in its environment to support a mate raising three chicks. Will it take a mate, or will it help its mother raise two siblings?
The male bird would come out even either way: Three of its own chicks, or itself plus two chicks raised by its mother.
The male bird will do better to raise its own chicks, because it is relates more closely to its own chicks than to its siblings.
The male bird is related equally to its own offspring or to its mother's offspring (assuming the same father bird). The male will do better to raise three chicks than to help its mother raise two more.
The male bird will do better to raise siblings because it takes less energy than raising its own chicks.
If a Bene Gesserit priestess secretly knows which young Bene Gesserits are her nieces (daughters of her siblings), then how many does she have to marry off in order to reproduce her own genes as if she'd had children of her own?
She has to marry off four nieces, since she is only 25% related to a niece.
She has to marry off two nieces sinc she is 50% related to each.
She has to marry off eight nieces, since she is only 12.5% related to each.
If she marries off even one niece, some of her own shared genes will be propagated.
The ocean of planet Ralinius has 3 x 10^-6 Moles/liter (molar) concentration of hydrogen ions. What is the ocean pH?
pH 3.0 -- The acidity of grapefruit or soda
pH 6.0 -- Slight acidity, like saliva
pH 5.52 -- Slighty more acidic than saliva
pH -5.5 -- More acidic than an iron mine. Would dissolve an iron shovel in a day.
Could corals grow in the Ralinius ocean at this pH?
Corals such as those on Earth could not grow, because the pH is too high (alkaline).
Corals such as those on Earth could not grow, because the pH is too low (acidic).
Corals could grow because they adapt to pH change, like bacteria do.
Corals could grow because the Ralinius pH is the correct pH for them.
If the pH of the ocean on a certain planet is 8.35, then what is the concentration of H+ in the water?
4.47x10^-9 moles/liter
3.07x10^-3 moles/liter
2.38x10^-4 moles/liter
8.35 moles/liter
If the concentration of H+ in the ocean of a certain planet is 2.51 x 10-9, then what is the pH?
8.60
8.00
-8.60
-8.00
Which observation from Avatar might be explained by "convergent" evolution?
The direhorses and the viperwolves both have six legs.
The animals all have long rope-like extensions that connect to their brains.
Many life forms on Pandora show luminescence.
The banshees have extensive flattened wing surfaces, with light limbs, similar to those of bats.
Which trait of the creatures in Avatar could be explained by natural selection in the relatively low gravity of the planet Pandora?
The cord-like neural extensions of the animals.
The luminescence of all Pandoran creatures and plants, similar to the luminescence of ocean creatures.