Carbon monoxide is lethal
Mold spores affect animals and plants
Tobacco is also lethal
So A. Tobacco smoke
The "spread of nuclear weapons and technology" is known as Nuclear Proliferation.
Answer: Option D
<u>Explanation:
</u>
Nuclear proliferation is described as the spread of weapons , fissionable material, and nations that are not recognized as "Nuclear Weapon States" by the Treaty is known as the "Non-Proliferation Treaty or NPT" of Nuclear Weapons.
Proliferation is opposed by many nations due to fear of arise in nuclear warfare with nuclear weapons. This leads to de-stabilization of international or regional relations, or infringe upon the national sovereignty of states.
A. Increase in soil fertility
An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself. Every animal, plant and human needs the primary physiological needs of water, food and shelter provided by the abiotic system. <span>
</span>
<span>The biogeochemical cycles move through mainly the biotic and abiotic components of the earth, more elaborately the spheres -biospheres, lithosphere, hydrosphere and atmosphere regions of the ecosystem. These biogeochemical cycles, from its terminology and discernable word morphology- involves the biological, geological and chemical components that make out to complete an exact and purposed cycle. The purpose in these cycles are to maintain balance and to ensure the ongoing process of the living and non-living organisms in the environment. These cycles’ help to living organisms survive and thrive. One popular example is the water cycle.
</span>
Alaska is the biggest in terms of sq miles
