the size of a nebula is what compresses the gases in space.
a nebula is slowly rotating and the gases, and other space dust, and minerals are slowly moving closer to the center of the nebula.(because of gravity) A star forms when a colossal amount of hydrogen, helium, carbon, oxygen and other trace minerals are all attempting to occupy a very small area in space. this causes those elements to super-heat which creates stars. stars that go supernova usually cause nebulae to collapse faster by causing a wave of distorted gravity(which causes the elements to be moved in one direction faster than if a nebula formed a star normally).
Answer:
The correct option is <u>A. It will soon start to grow.</u>
Explanation:
In biological terms, a food chain can be described as a linear representation of energy flow in an ecosystem. It usually starts with the producers and then represents a chain until the decomposers.
A change in any of the species population of the food chain can affect the food chain widely. For example, in the question above, <em>as the population of algae increases, the population of minnows will also increase. This is because there will be more supply of food for the minnows.</em>
Answer:
True
Explanation:
K-selected species tend to be opportunists and can fill a niche by reproducing rapidly until carrying capacity is reached. On a survivorship curve, r-selected species tend to demonstrate late loss.
The correct answer is (A)
Burning of wood is a chemical change as new substance is formed during the burning of wood which is not reversible.
Now, what happened during the burning of wood?
In the case of burning wood, stored potential energy( in the form of chemical energy) in the log is released due to heating by other excited atoms. This chemical reaction is called combustion that requires oxygen. We can also say that combustion is change of potential chemical energy into kinetic energy in the form of heat.
