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Ksju [112]
2 years ago
10

Justin made a list of items from a book.

Biology
2 answers:
Olenka [21]2 years ago
6 0

Answer:

D Butterfly, coral and amoeba came from pre existing  cells  

Explanation:

sdas [7]2 years ago
5 0

Answer:

D

Explanation:

A pen and a lamp are non living things yes a lamp can use electricity to turn on so the best answer would be D because they are living things.

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Sarah recently learned that O2 is found in the Earth’s water bodies. She was amazed to know the proportion of O2 found in the oc
Mamont248 [21]

It has been found that the rainforests are accountable for about one-third, that is, 28 percent of the oxygen of the Earth, however, the majority of the oxygen, that is, about 70 percent in the atmosphere is generated by the marine plants. The left-over two percent of the oxygen comes from other sources.  

The majority of the oxygen comes from the tiny plants in the ocean known as phytoplankton, which lives near the surface of the water and drifts with the currents. Similarly to plants, they perform the process of photosynthesis, that is, they utilize carbon dioxide and sunlight to prepare food, oxygen is the by-product of photosynthesis.  

However, the concentration of the dissolved oxygen, which the water can hold relies on the salinity and temperature of the water. The cold water can withhold more oxygen in comparison to warm water and fresh water can hold more oxygen in comparison to salt water. So, the warmer and saltier the water is, the less will be the oxygen dissolved in it.  


7 0
2 years ago
Explain the steps that you would use to focus on a specimen under a compound light microscope.
Rashid [163]

To start, move the objective lens to its lowest power setting. Place a slide on the stage with the label side up and the cover slip in the middle. You can only use the coarse focus knob when the power is low. If you can't see anything, move the slide a little while you look and focus. If nothing shows up, turn down the light and move the slide a little while you're looking and focusing. Once you're in focus on low power, move the slide to make the object of interest in the middle of it. Turn the objective to medium power and only change the fine focus. If you need to, turn the objective to high power and only adjust the fine focus.

8 0
2 years ago
A chemical equation lists CH3COOH(aq) as a reactant. What does (aq) indicate?
Dvinal [7]

Answer:

The compound is dissolved in water

Explanation:

"aq." is the abbreviation for "aqueous" ( watery).

In chemical equations the symbol (aq) means that the substance is dissolved in water.

3 0
3 years ago
Read 2 more answers
35. Explain the cause and effect of nondisjunction.
Arisa [49]

Explanation:

Nondisjunction: Failure of paired chromosomes to separate (to disjoin) during cell division, so that both chromosomes go to one daughter cell and none go to the other. Nondisjunction causes errors in chromosome number, such as trisomy 21 (Down syndrome) and monosomy X (Turner syndrome). It is also a common cause of early spontaneous abortions

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2 years ago
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The continental of Africa is found in which plate
xxTIMURxx [149]
The continent of Africa is found mostly on the African Plate.
8 0
3 years ago
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