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3 years ago

Which of the following scenarios is representative of how agricultural practices can affect the environment?

2 answers:

Citrus2011 [14]3 years ago

6 0

The correct answer to the question, 'which of the following scenarios is representative of how agricultural practice can affect the environment' is A. Option A is chosen because it is the only option that refer to another environment which is different from that of the farm. When fertilizers are washed to nearby ponds as a result of erosion, it causes a lot of negative changes in the pond. For instance, the chemicals in the fertilizer can be poisonous to some of the smaller organisms in the pond, this will result in the death of these organisms. Fertilizer run off can also cause excessive growth of plants such as algae in the pond. This may block out the light necessary for the survival of the organisms in the ponds and may also reduce the amount of oxygen available to the organisms living in the pond.

mafiozo [28]3 years ago

3 0

Answer:

Explanation:

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What is prokaryote and eukaryote? give there characteristic .

igor_vitrenko [27]

Answer & Explanation:

Prokaryote: a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles. Prokaryotes include the bacteria and cyanobacteria.

Characteristic of prokaryote: lack an organized nucleus and other membrane-bound organelles. Prokaryotic DNA is found in a central part of the cell called the nucleoid. The cell wall of a prokaryote acts as an extra layer of protection, helps maintain cell shape, and prevents dehydration.

Eukaryote: an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus. Eukaryotes include all living organisms other than the eubacteria and archaebacteria.

Characteristic of eukaryote: larger than prokaryotic cells and have a “true” nucleus, membrane-bound organelles, and rod-shaped chromosomes. The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes

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2 years ago

Antigen processing and presentation antigen processing and presentation is a way for a cell to give information about its activi

vova2212 [387]

Is a way for a cell to give information about its activities.

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3 years ago

Which statement is true for all prokaryotic and eukaryotic organisms?

horrorfan [7]

Answer: Both types of the organism assemble proteins

Explanation:

The statement that is true for all the prokaryotes and eukaryotic organism. both of the organism assemble protein through the process of transcription and translation.

Both type of the organism use different-different machinery but assemble protein by transcription and translation.

Transcription and translation is the process by which the protein synthesis takes place.

8 0

3 years ago

How would you test the presence of starch in leaves?

Lesechka [4]

Answer:

1. Remove a green leaf from the plant

2. Boil the leaf in boiling water stop enzymatic reaction within cells in leaf

3. Put the boiled leaf in boiling tube containing alcohol extract (ethanol) chlorophyll ethanol dissolves Lipids in cell membranes.

4. Return to leave to the hot water soften the leaf and allows penetration of iodine

5. Remove leaf and perform the iodine test

Explanation:

starch is white powdery substance consisting of glucose which is used by plants as food the percents of starch in leaves evidence enough of the process a photosynthesis being carried out in leaves as the formation of starch necessitates photosynthesis.

I hope this helps :)

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3 years ago

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Korolek [52]

Answer:

what happened

Explanation:

7 0

3 years ago