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Stels [109]
3 years ago
5

Weight is the force of:

Biology
1 answer:
frez [133]3 years ago
3 0
Gravity pulling a mass down to earth
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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
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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
3 years ago
Explain why scientirsts concluded that the instructions for species characteristics were carried in DNA.
siniylev [52]

Answer:

Explanation:

Deoxyribonucleic acid is said to contain instruction for species characteristics because it carries the information that characterize an individual.

DNA are made up of Nitrogenous bases that are unique codes specify by an individual and no two person has the same the DNA.

Genes are genetic information or instruction that specify an individual. it is located in the chromosome in the nucleus. DNA contains gene which helps to make molecules called proteins. It is the basis of all inheritance and the expression of the gene is what produces the phenotype that is visible.

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How much time passed between the formation of the Earth and the first life?
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If our eyes were sensitive only to x rays the world would appear __________.
maxonik [38]
If our eyes were sensitive only to x rays the world would appear dark because X-ray light does not reach Earth's surface.
6 0
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AHHH plz help lol.<br>Describe how nucleotides and hydrogen bonds affect the structure of DNA.
Nezavi [6.7K]

Answer:

<em><u>The nucleotides are bonded together via hydrogen bonds making it easy for the dna to be split in half and replicated</u></em>

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