Answer: All of these are true (besides the one that says that none are true...).
Explanation:
The ecological succession is a slow change in the living community of the ecosystem along with the changes occurring in the non-living environment until the ecosystem attains stability.
The primary succession can be defined as the initial level of succession. This succession begins in the primitive environment. The soil develops after the weathering process of rocks.
The secondary succession begins in the region where life forms existed before and the area begin damaged by the catostrophic event like forest fire, earthquake and other type of calamities. Some remaining plant parts can give birth to the entire colony of plants.
The ozone layer was created by a CFP and it send out dangerous ultraviolet waves
Answer:
B
Explanation:
because the sandpaper is rougher than the flat table.
Answer:
You use the metric system
Explanation:
Its used all around the world and what is supposed to be used for scientific results.
