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Masteriza [31]
3 years ago
11

A student measured the amount of oxygen and carbon dioxide dissolved in an aquarium containing an aquatic plant and a snail. Why

did the amount of dissolved oxygen decrease when the aquarium was kept in the dark for 10 hours?A. Because photosynthesis could not occur   B. Because the plant died   C. Because the snail died   D. Because cellular respiration could not occur
Biology
2 answers:
marissa [1.9K]3 years ago
4 0

Answer:

A. Because photosynthesis could not occur

Explanation:

ratelena [41]3 years ago
3 0

The answer is A. Putting the aquarium in the dark means that the aquatic plants will not be able to photosynthesize.  The process of photosynthesis produces oxygen as a by-product. The oxygen is used by the fishes in respiration and release carbon dioxide. The carbon dioxide is used by the aquatic plants in photosynthesis.

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Which property of water makes it good at regulating temperature?
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In a certain breed of dog, the alleles B and b determine black and brown coats respectively. However, the allele Q of a gene on
cestrela7 [59]

Answer:

12 gray , 3 black, 1 brown

Explanation:

If Q allele of a gene on a separate chromosomes is epistatic to the B (black) and b (brown) color alleles, in cross between two animals with genotypes BbQq produces 12 gray coat color, 3 black coat color and 1 brown coat color animals.

                                        BbQq      x      BbQq

                                   Gray coat        Gray coat

                   BQ                  Bq                 bQ                 bq

   BQ    BBQQ(gray)  BBQq(gray)   BbQQ(gray)   BbQq(gray)

   Bq     BBQq(gray)   BBqq(Black)  BbQq(gray)   Bbqq(Black)

   bQ     BbQQ(gray)  BbQq(gray)   bbQQ(gray)   bbQq(gray)

   bq     BbQq(Gray)   Bbqq(Black)  bbQq(gray)    bbqq(brown)

So the phenotypic ratio is  Gray : Black : Brown

                                        =      12  :      3   :      1

8 0
3 years ago
Which of the following conclusions can be made based on the observed fact that stem cells can differentiate into any kind of cel
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Answer:

a

Explanation:

7 0
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PLEASE HELP 20 POINTS!!!!!!
babymother [125]
Photosynthesis converts light energy into chemical energy that can be stored.
5 0
4 years ago
Read 2 more answers
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