The correct answer is (d) all of the above.
The most important phenomenon of the earth's crust is that it is not stable. It keeps on changing with respect to time called as continental shift. Continental shift squashes and changes a continent in such a way that it is very hard to find out its early history. Continental shift results in earthquakes, volcanoes and tsunamis. The movement of tectonic plates is the main reason for continental shift which leds to the natural calamities such as volcanoes, earthquake and tsunami on the local environment.
Answer:
light
Explanation:
To complete photosynthesis a plant needs sunlight. if a plant didn't have sun light photosynthesis would be impossible.
Answer - Compare population growth problems in more developed countries and less developed countries: More developed countries try to reduce the birth rate, but are unable to. Less developed countries have high death rates.
Answer:
grafting
Explanation:
Grafting is a method used for the creation of grafts, which are instruments used in a type of asexual reproduction for the propagation of difficult root plants. This method is done by plant specialists (such as botanists or agronomists) and consists of the union of two different species. The process takes place between a part of a plant called a graft (or rider) that is inserted into another part of another plant (or another individual of the same species), which may be the root system or the stem known as a rootstock (or horse)