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myrzilka [38]
4 years ago
10

Jason lives near a state park, and he likes hiking through the grassy trails that lead to a nearby lake. He appreciates nature a

nd the surrounding components making up the ecosystem. However, he often sees trash left near the lake, such as plastic bags floating near the shore. Human activities disrupt the natural cycling of materials in an ecosystem. Identify and describe three human activities that negatively affect
Biology
1 answer:
Roman55 [17]4 years ago
8 0

Answer: Air Pollution, plastic waste pollution, and toxic sludge dumping

Explanation: These factors of human society harm nature and negatively affect ecosystems.

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How did schools in the South respond to the ruling that they needed to integrate?
Xelga [282]

Answer: They refused or sometimes even closed schools instead of integrating

5 0
3 years ago
Which traits are polygenic traits? Check all that apply.
Mashutka [201]

Height is a polygenic trait, controlled by at least three genes with six alleles. If you are dominant for all of the alleles for height, then you will be very tall. There is also a wide range of skin color across people. Skin color is also a polygenic trait, as are hair and eye color.

All the above:

Eye color

height

skin color

4 0
3 years ago
Why is the sun an important form of energy for all living things?
Sonbull [250]
The Sun<span> is the major </span>source of energy<span> for </span>organisms<span> and the ecosystems of which they are a part. Producers, such as plants and algae, use </span>energy<span> from sunlight to make food </span>energy<span> by combining carbon dioxide and water to </span>form<span> organic matter. This process begins the flow of </span>energy<span> through almost </span>all<span> food webs.</span>
5 0
3 years ago
Read 2 more answers
In proteins, secondary, tertiary, and quaternary levels of structure depend on the primary structure.
Fittoniya [83]

Answer:b. Amino acid sequence, hydrogen bonding between backbone groups, the overall shape of a single polypeptide, and combinations of tertiary structures.

Explanation: Primary structure is the amino acid sequence in the polypeptide chain. When the sequence is altered due to mutation it can lead to formation of entirely new amino acid sequence.

Secondary structure could be the helical structure or the Beta pleated sheet. It is form from the interaction of atom that are backbones.It is the hydrogen bond between amino Hydrogen and carboxyl oxygen atom in the backbones

Tertiary structure- Overall structure of polypeptide. It result from interaction of the R groups amino acids. It gives the shape of the polypeptide.

Quantenary- Are protein made up of multiple polypeptide chain. This chain are also called subunit. It is the combination of all tertiary structures given rise to a functional protein.

8 0
4 years ago
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A student conducted an experiment to observe what happed a plant cell when paced in different solutions. Analyze the following o
Ainat [17]

Answer:

Water is diffusing in and out of the cell at the same rate.

Water is moving into the cell at a faster rate than out of the cell.

Water is moving out of the cell at a faster rate than into the cell.

Water is only moving out of the cell.

Explanation:

4 0
3 years ago
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