plants (living and dead) is the main source
What? Ermmn... Answer to that top question is A.
The Linnaeus's system is based on the similarities in physical traits. It has allowed biologists to group related species into genealogical tees, this represent evolutionary lineage of modern organisms from common ancestors.
IT consist of hierarchy of taxa , the kingdom to species. Each species given a specific/ unique two word Latin name. Added domain is a larger and more inclusive taxon than the kingdom.
This system of Linnaeus's is classified into seven levels. They are , form largest to smallest, kingdom,phylum, class, order, family, genus, species. The first frame principle for defining natural genera and species of organisms and created uniform system for naming that is known as binomial nomenclature.
To learn more about The Linnaeus's system here
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Answer:
They can be regulated by different enzymes and feedback.
Explanation:
Most of the transduction pathways are regulated by second messengers and final products. There can be some receptors inside the cell that perceive the excess of some molecules, like Calcium, for example, which can inhibit some signaling pathways, and that's why it's called a third messenger.
Answer:
<u>A</u> One of the key elements in creating a green economy is the construction of <u>green buildings</u>.
Explanation:
Any economy relies on businesses and buildings, so a green economy is going to need green buildings to support a green economy as well.