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Degger [83]
3 years ago
15

35. Cows host a variety of bacteria in their bodies. Many of these bacteria live in their digestive tracts and

Biology
1 answer:
Akimi4 [234]3 years ago
5 0
Answer:
A) mutualism

Explanation:
Both species cows and bacteria get benefits in this association.
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bazaltina [42]

Answer:

C i think.......................................

5 0
3 years ago
Acid rain occurs when sulfur dioxide is he atmosphere is oxidized in the presence of nitrogen dioxide. Acid rain is an example o
Ierofanga [76]

Answer:

A secondary pollutant

Explanation:

Pollutants can broadly be classified into two main categories based on their formation or synthesis. 1: Primary pollutants, 2: Secondary pollutants.

1: Primary pollutants

Primary pollutant can be considered as any environmental pollutant that is being directly emitted from a certain source like when we burn coal carbon di oxide is directly emitted into the atmosphere so CO2 is a primary pollutant.

Similarly sulfur di oxide or SO2 is also a primary pollutant that is emitted by the gas emissions of motor vehicles.

2: Secondary pollutants:

On the other hand, secondary pollutant is something that is not directly emitted on earth as an environmental pollutant but some how it is formed due to a reaction of primary pollutant.

Such as mentioned in the question that SO2 when oxidized in air in the presence of enzymes and water, it form H2SO4 or acid rain which directly falls on earth and incurs great amount of damage to not only living organisms but also non-living organisms such as marble buildings.

Therefore, acid rain is secondary pollutant. Please see picture for better understanding.

Hope it help!

3 0
3 years ago
What is prokaryote and eukaryote? give there characteristic .
igor_vitrenko [27]

Answer & Explanation:

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

<u><em>Characteristic of prokaryote</em></u>: 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.

<em><u>Eukaryote</u></em>: 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.

<u><em>Characteristic of eukaryote</em></u>: 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

7 0
3 years ago
Describe how the integumentary system responds to differences in sunlight
Mama L [17]

The integumentary system (skin) reacts different on different sun intensity (different length exposure to sun).

For example, moderate exposure to the sunlight contributes to the production of melanin and vitamin D by the body. On the other hand, high exposure to sunlight can have negative health effects such as sunburn, which is an inflammatory response to DNA damage caused by UV radiation.  


5 0
3 years ago
Blank occur when the partially positive blank attract partially negative atoms nearby examples include the blank
san4es73 [151]

Answer:

ionic bonds,

NaCl and MgCl₂

4 0
4 years ago
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