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Norma-Jean [14]
4 years ago
9

________________ digestion begins in the mouth through the action of teeth chewing the food

Biology
2 answers:
Tresset [83]4 years ago
6 0
C. chemical

have a good day
Pavel [41]4 years ago
3 0

Answer:

C. Mechanical

Explanation:

Mechanical digestion involves physically breaking the food into smaller pieces. Mechanical digestion begins in the mouth as the food is being chewed.

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Bacteria are grown in a petri dish. One side of the dish is sprayed with an antibiotic. After a week, the number of bacteria col
vladimir1956 [14]

Answer:

In a research there are two variables independent and dependent variable. independent variable is defined as the variable which is controlled and changed in a scientific experiment and evaluate the effects on the dependent variable while the variable which are tested and measured in experiment are called dependent variable.

When antibiotic is sprayed at one side of the petri dish, the bacterial growth on that side will eventually decrease in comparison to other side.

So, the independent variable in this experiment will be antibiotic because it is used to understand the growth of bacteria by decreasing their numbers and the dependent variable in this experiment will be bacteria as they vary according to the change in independent variable that is antibiotic.

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4 years ago
Why do some scientists think it may be harder for forest to “bounce back” after a wildfire?
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Answer:

that the ground is damiged and there ar no new seeds

Explanation:

5 0
3 years ago
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Waste-management technologies can protect the environment from different
kumpel [21]

Sanitary landfill burial technology could help to reduce the amount of

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Explanation:

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This method is introduced by England in 1912.  It is also called controlled tipping. It is about 1- or 3-meter feet. It is covered with clay.

6 0
3 years ago
Which is the main light-absorbing pigment for photosynthesis?
Nutka1998 [239]

Answer:

<h2><em><u>Chlorophyll</u></em></h2>

Explanation:

<u>Chlorophyll, the primary pigment used in photosynthesis</u>, <em>reflects green light and absorbs red and blue light most strongly</em>.

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll.

4 0
3 years ago
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What is the chemical reaction used to study enzyme activity in the lab (lactase breaking down lactose into its monomers). Know t
Bas_tet [7]

Answer: The chemical reaction in this example is Called hydrolysis in the presence of Lactase

Here is a word equation for the hydrolysis of lactose:

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6 0
3 years ago
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