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schepotkina [342]
3 years ago
13

1

Biology
2 answers:
Aloiza [94]3 years ago
8 0

Answer:

C,The sun

Explanation:

the vast majority of energy in food webs originates from the sun

ElenaW [278]3 years ago
4 0

Answer:

C. The sun

Explanation:

The sun provides energy for the plant to do photosynthesis. Since all animal species depend on plants qnd the sun helps the plants, the sun is the original source of energy.

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4. Which of the following poses a major problem in understanding and fixing the issues with the San Joaquin Valley?
Tamiku [17]

A major problem to understand and correct the problems with the San Joaquin Valley lack of tools and scientific data on valley fever.

  • A. lack of scientific tools and data

<h3>What is valley fever?</h3>

The small town of Avenal, in the San Joaquin Valley, is most affected by an incurable disease known as 'valley fever'. Cases of an incurable disease called "valley fever", are multiplying at an alarming and surprising rate in the southwestern United States.

With this information, we can conclude that San Joaquin Valley, is best known for an incurable disease known as 'valley fever', where there is no scientific data that can explain.

Learn more about valley fever in brainly.com/question/13051243

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8 0
1 year ago
What is the structure of a protein molecule?
Olenka [21]

Protein structure is the three-dimensional arrangement of atoms in a protein molecule. Proteins are polymers — specifically polypeptides — formed from sequences of amino acids, the monomers of the polymer. A single amino acid monomer may also be called a residue (chemistry) indicating a repeating unit of a polymer. Proteins form by amino acids undergoing condensation reactions, in which the amino acids lose one water molecule per reaction in order to attach to one another with a peptide bond. By convention, a chain under 30 amino acids is often identified as a peptide, rather than a protein.[1] To be able to perform their biological function, proteins fold into one or more specific spatial conformations driven by a number of non-covalent interactions such as hydrogen bonding, ionic interactions, Van der Waals forces, and hydrophobic packing. To understand the functions of proteins at a molecular level, it is often necessary to determine their three-dimensional structure. This is the topic of the scientific field of structural biology, which employs techniques such as X-ray crystallography, NMR spectroscopy, and dual polarisation interferometry to determine the structure of proteins.

Protein structures range in size from tens to several thousand amino acids.[2] By physical size, proteins are classified as nanoparticles, between 1–100 nm. Very large aggregates can be formed from protein subunits. For example, many thousands of actin molecules assemble into a microfilament.

A protein may undergo reversible structural changes in performing its biological function. The alternative structures of the same protein are referred to as different conformational isomers, or simply, conformations, and transitions between them are called conformational changes.

4 0
3 years ago
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What fills in the need in the stream/ocean for salmon to have cold, clean and clear water
Dahasolnce [82]
<span>The salmon is among the most revered of coastal animals, for its cultural and spiritual importance to First Nations, its world-famous tasty flesh, and its role in the historical economy of BC. The most common salmon in our local waters are Chum and Coho. All Pacific salmon species are anadromous, meaning they spend most of their life in the ocean but migrate to fresh water to breed. Consequently they interact with several different ecosystems, and play important roles in terrestrial, freshwater and marine food webs.</span>
3 0
2 years ago
Candace is wanting to be sure that she is doing what she can to prevent the spread of disease. Which of the following should she
Temka [501]

Answer:

Take medicine to destroy the germs.

Avoid contact with other people's bodily fluids.

Eat healthful foods such as fruits and vegetables.

Explanation:

For the spread of disease, there is usually a host who bears the infectious agent, the agent exits through a port of exit from the host, is carried by a mode of transmission, then enters a susceptible second host through a port of entry. To stop transmission, stopping the infectious agent can include;

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  3. Protecting the ports of entry in the susceptible second potential host – e.g by improving immunity

8 0
2 years ago
Read 2 more answers
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