Answer: The answer is (4), centuries
Explanation:
The purpose is to stimulate plant growth by emitting electromagnetic spectrum appropriate for photosynthesis
Stimulate:Rise levels of physiological or nervous activity in
Hope this helps ^-^
In prophase I of meiosis, homologous chromosomes form tetrads.
Answer: Atmospheric Nitrogen is unreactive
Explanation:
The atmosphere is made up of about 80% Nitrogen, 16% oxygen, about 4% carbon dioxide, rare gases etc.
However, the 80% Nitrogen is highly unreactive, and needs to be trapped by competent micro organisms known as nitrogen-fixing bacteria in the root nodules of legumes.
Then, it is converted to several forms like nitrites, nitrates (easily absorbed by plants), ammonia and finally escape to the atmosphere again.
This brief illustration explains the NITROGEN CYCLE, and it is the only means by which plants and animals can use the highly unreactive nitrogen
Explanation:
we have mass Extinction deforestation and pollution