Answer: Gymnosperms have unprotected seeds, whereas angiosperms have enclosed, protected seeds.
Explanation: See above.
I’m pretty sure it’s the exoskeleton
Answer:
As organisms adapt to changing conditions, they evolve in a way to fit their surrounding environment. According to Darwin's <em>survival of the fittest</em> concept, organisms that can adapt to fluctuating conditions are more fitter and hence selected by nature.
Here fitter means reproductive superiority.
The answer would be:
Passive transport
Active transport
Why?
There are two ways molecules can move across membranes within the cell. What makes the two different is the use of energy.
PASSIVE transport is the movement of molecules DOWN the concentration gradient. The molecules move from areas of higher concentration to lower concentration. This does nor require energy. Comparing it to the scenario, the child starts from a higher area and ends at a lower area. Going down a slide does not take energy. The child simply goes down it.
When you talk about the child going UP a slide, think ACTIVE transport. Unlike passive transport, active transport requires energy, because the molecules move AGAINST the concentration gradient. The movement of molecules in this type of transport is the opposite, it goes from lower areas of concentration to higher areas of concentration.
Hopefully, this has been educational for you and was able to help you understand the difference between the two.
Well the earth's atmosphere is kept around the earth by gravity its a little different than a green house but its the same idea .the gravity keeps a barrier between space and the earth and it acts like a green house the sun goes threw the atmosphere and is magnified by the humidity and t reflections which are the clouds. it all kept around the earth by the pressure the gravity causes and it also contains any and all pollutants we release into the air. the barrier the gravity makes is like the glass in the green house .the plants and trees on the earth produce the oxygen we breath and is kept down around the earth because the earth spins and causes centrifugal force