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Ostrovityanka [42]
3 years ago
5

Cellular respiration and photosynthesis are key elements of the __________ cycle.

Biology
2 answers:
Anna11 [10]3 years ago
8 0
B carbonthats the answer
coldgirl [10]3 years ago
6 0
B. carbon cycle whys it gotta be 20
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Usually the average growth cycle of eyebrows is 5 to 7 weeks, but it can be shorter or longer depending on various factors such as, your age, metabolism, and weight.
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Which of the following is an example of Cross-Contamination? A. A customer breaks their tooth after biting into a hamburger with
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Answer:B. A customer gets sick with E. Coli after eating lettuce that was cut on same cutting board as raw meat.

Explanation:

The glass is not a food and is not considered cross contamination.

The meat was fully cooked and the E. Coli is destroyed.

the same situation as A.

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Effects of pollution might includea. inability to see the top of skyscrapers because of the smog.b. acid rain-induced destructio
poizon [28]

Answer:

e. all of these answers

Explanation:

Air pollution in addition to affecting people, animals, plants and goods, causes other problems related to the changes that occur in its composition, such as: climate change, acid rain and the destruction of the ozone layer phenomena that affect the planet globally and that it is necessary to stop urgently by taking the necessary measures.

Main effects of pollution:

- Effects on human health : It is difficult to determine the exact relationships between exposure to air pollution and diseases developed in humans, especially in the long term, they are not known exactly, but there is evidence that high concentrations of pollutants in the atmosphere are a danger for the human being.  it can also act as a vector to spread diseases

- Effects on the environment :

It is in the natural environment where the first signs of the harmful effects of air pollution were seen, plants and vegetation act as an indicator in this regard.

Some of the most common contaminants :

SO2 ; O3 ; Fluorides ;  HCL; Cl2; NO2

- Effect on materials :

Contaminants can affect materials by particle deposition or abrasion and also by chemical reactions between the contaminant and the material. For example : stone, iron and paintings

- SMOG:

SMOG is known as fog-type pollution that occurs in some cities when the combination of certain factors occurs, depending on weather conditions and certain pollutants.

Some of them are:

Industrial smog

Photochemical smog

This phenomenon (SMOG) occurs when the mixture of nitrogen oxides and volatile hydrocarbons emitted by cars and industries and atmospheric oxygen react with solar radiation and form ozone.

- Acid deposition.

It is a regional effect. It results from the transformation of atmospheric pollutants such as sulfur dioxide (SO2) and nitrogen oxides (NOx) into secondary pollutants such as sulfuric acid (H2SO4), ammonium nitrate (NH4NO3) and nitric acid (HNO3).

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- Water contamination

Pollution of the waters of a sick river and kill fish, but not only these, but all forms of aquatic life .

Pesticides and other toxic chemicals that are used in the domestic environment, farms and industrial production, and that are dumped into the water, cause fish death.

3 0
3 years ago
Which factors affect the rate of photosynthesis? Select all that apply. A).light intensity B).pH C).temperature D).chlorophyll d
sashaice [31]

Answer:

C.)

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Can someone help ill give more brainlets if its right
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Mouth: site where mechanical digestion takes place

Stomach: A mixture of chemical etc...

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