Answer:
Option (4)
Explanation:
The radiation are defined as the energy that is liberated from atoms in the form of electromagnetic waves or minute particles of matter. For example, the radiations that are emitted from the sun in the form of light.
This radiations are mainly of 3 types. This includes-
(a) Alpha Radiation- These are the short ranged particles and are very heavy. This radiations cannot penetrate the human skins but they can cause harmful diseases.
(b) Beta Radiation- These are also the short-ranged particles but they lighter. This radiations can penetrate the human skin upto the depth where the new skins are created.
(c) Gamma Radiation- These are highly dangerous and are penetrable to the human skin. This type of radiations are often used for the medical purposes.
Thus, the correct answer is option (4).
Answer:
C. Saudi Arabia
Explanation:
The government of Saudi Arabia is led by the monarch, King Salman, who acceded to the throne on 23 January 2015. No political parties or national elections are permitted, and according to The Economist's 2010 Democracy Index, the Saudi government was the seventh-most authoritarian regime among the 167 countries rated.
Answer: Avoid non-native and invasive species of plants.
Answer:
To meet this energetic challenge, hummingbirds save enough energy to survive cold nights by lowering their internal thermostat at night, becoming hypothermic.
Explanation:
