Answer:
Nitrogen compounds in the soil ---> Plants
Nitrogen compounds in the soil ---> Denitrification bacteria (convert nitrogen compounds to N2)
Nitrogen in the atmosphere ---> Nitrogen fixing bacteria (convert N2 to nitrogen compounds)
Explanation:
This model in the image section is portraying the nitrogen cycle, which involves the transfer of nitrogen within biosphere, atmosphere, and lithosphere etc. The abiotic components of this model are the non-living parts while the biotic components are the living parts.
In this model, the movement of nitrogen from abiotic or non-living component of an ecosystem to the biotic or living component is as follows:
Nitrogen compounds in the soil ---> Plants
Nitrogen compounds in the soil ---> Denitrification bacteria (convert nitrogen compounds to N2)
Nitrogen in the atmosphere ---> Nitrogen fixing bacteria (convert N2 to nitrogen compounds)
They are connected together by tendons
Answer is D) Hydrogen bonds are weaker than covalent bonds and form between partially charged atoms or molecules
The best answer is b - it is rigid.
The cell wall is defined as the rigid, outermost layer found in plants and also certain bacteria, algae and fungi. It is absent in animal cells.
The plant cell wall is made up cellulose which is a structural carbohydrate. The cell wall is rigid and thus offers structural support allowing plant such as trees to grow to great heights.
It also helps prevent water loss, helps protect against insects and pathogens and keeps the shape of the plant.