If you put a lump of solid carbon dioxide (dry ice) in a paper cup or
on a paper plate on the kitchen counter, it gets smaller and smaller
and finally it just disappears, but you never see a puddle around it
like you would with regular ice!
Carbon dioxide has no liquid phase when the pressure on it is less than
about 5 times normal atmospheric pressure. So in the kind of pressure
that we like to live in, dry ice goes straight to gas when it melts. That kind
of behavior is called "sublimation", and we say that the dry ice "sublimes".
Every substance has some pressure limit like that. For water, it's 0.006 of
normal atmospheric pressure. At any pressure lower than that, liquid water
can't exist, and an ice cube sublimes ... it melts directly into water vapor
without a puddle.
Answer:
The advantages of sexual reproduction: produces genetic variation in the offspring. the species can adapt to new environments due to variation, which gives them a survival advantage. a disease is less likely to affect all the individuals in a population.
I hope it's helpful!
Answer: True.
Explanation:
All the organism cells read the same genetic blueprint. So they all have the exact same DNA.
Answer:
C) Letter C because the emergence of a mature forest will resist changes to the ecosystem with the greatest success.
Explanation:
Ecosystem stability can be a factor of species diversity within a community. Which letter above would indicate the stage of success in an ecosystem that represents the greatest potential for stability and resilience?
A) Letter A because light levels are high and will promote the greatest growth of primary producers.
B) All letters represent equal opportunity for stability as the area of land does not change over time.
C) Letter C because the emergence of a mature forest will resist changes to the ecosystem with the greatest success.
D) Letter B because aspen, spruce, and pines can provide the most opportunity for primary consumers to hide from their predator species
