Answer:
<u><em>Explain why leaves need stomata?</em></u>
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</em></u>Stomata have two main functions, namely, they allow for gas exchange acting as an entryway for carbon dioxide (CO2) and releasing the Oxygen (O2) that we breathe. The other main function is regulating water movement through transpiration.
<u><em>Explain why plants need small amounts of minerals. Describe how they obtain these minerals?</em></u>
Plant roots absorb mineral salts including nitrates needed for healthy growth. For healthy growth plants need mineral ions including: - Nitrate for producing amino acids which are then used to form proteins. - Magnesium is needed for chlorophyll production.
I mean the answer is simple, the nucleus is literally the "brain of the cell" so it is the one who "makes the information" so the cell can follow the instructions and the cell works perfectly. For example The mitochondria is the power house which is what gives the cell its energy, if the nucleus wasnt there The mitochondria wouldnt be able to do this.
The answer is; negative…positive
In a closed circuit, electrons move from the negative node to the positive node. Electric current, on the other hand, flows from the positive node to the negative node. The flow of electrons and electric current is measured in amperes (A).
Biosphere (Living Things)
All the living things in the planet are categorized under the biosphere. In this view, the biosphere includes all of the animals, plants, and microorganisms of earth. Humans as well belong to this group. The entire ecological communities within the physical surrounding of the earth are within the umbrella of living things (biosphere). These ecological communities interact together with the physical aspects of the earth including the hydrosphere, lithosphere, and the atmosphere.
Collectively, these ecological communities are made reference to as biomes. Deserts, forests, grasslands, aquatic, tundra, and chaparral are the six main biomes that are present in the biosphere. The living things on earth interact with each other in various ways, which is well elaborated under the trophic levels of food chain – how energy is transferred in ecological systems.