The most widely accepted theory of planetary formation, known as the nebular hypothesis, maintains that 4.6 billion years ago, the Solar System formed from the gravitational collapse of a giant molecular cloud which was light years across.
The right option is; a. soil degradation
Soil degradation most plausibly accounts for the reduction in corn yield.
Soil degradation is an environmental problem in which the condition or quality of soil is reduced due to its improper use usually for agricultural or industrial purposes. Soil degradation can reduce the physical, chemical and biological quality of soil. Soil degradation results in loss of organic matter, soil contamination, fertility decline, and soil acidity or alkalinity which can greatly affect agricultural productivity.
A shaded relief map uses different colors to represent elevation. The correct option among all the options given in the question is option "C". The shaded relief map is actually used to show the various high and low elevations of an area.It actually shows mountains and plains in different colors for people to understand.
The answer is false.
In middle east countries, falconry is useful to Arabians way back 2000 years ago. The bird was traditionally used for hunting and it was a source of survival in the desert. The humans used its amazing ability to see great distances and to supplement their diet, catching the Habara, or similarly known as a wild turkey in the desert. That is why UAE makes the falcon as their national symbol. Camel is only used as transportation not as a means of survival.
