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aniked [119]
3 years ago
11

Please help me I’ll mark as brainliest.

Biology
1 answer:
amid [387]3 years ago
6 0

Answer:

C or D. Success. Good bye.

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What is the source of oxygen in the epipelagic zone?
Rudiy27

The correct answer is (B) Photosynthesis and diffusion from the air

Dissolved oxygen enters the water from photosynthesis and through air. The The aeration of water can be caused by wind. From the air oxygen diffuse into the water and gets mixed in the it through circulation. The oxygen is also produced as a waste product of photosynthesis from blue-green algae, phytoplankton, etc which is added in water.




7 0
3 years ago
A cell in the testes of a male bald eagle is getting ready to begin meiosis. The diploid number for this bird species is 66. How
Ostrovityanka [42]

Answer:

Replicated chromosomes at metaphase I = 66

Sister chromatids at metaphase I = 66 x 2 = 132

Sister chromatids at prophase II = 66

Chromosomes in each sperm cells = 33

Explanation:

Metaphase I of meiosis I would have 66 replicated chromosomes in the testicular cells of the bird. Each of the replicated chromosomes would have two sister chromatids. So, a total of 66 replicated chromosomes would have 66 x 2 = 132 sister chromatids.  

Due to segregation of homologous chromosomes towards opposite poles in anaphase I, each daughter cell formed by the end of meiosis I would have 33 replicated chromosomes. So, each of the daughter cells would have a total 33 x 2 = 66 sister chromatids at prophase II.  

Since meiosis II maintains the chromosome number, each sperm cell formed by the end of meiosis II would have 33 chromosomes.  

8 0
3 years ago
Which subatomic particle orbits the nucleus?
Rom4ik [11]
Protons and neutrons
5 0
2 years ago
Which of these describes the level of organization of the digestive system?
Valentin [98]

Answer:

the organ system

the levels of organization go from

•cells

•tissues

•organs

•organ systems

•organisms

•population

•community

•ecosystem

•biome

•biosphere

7 0
3 years ago
This organ of digestion mixes food with hydrochloric acid and gastric secretions and stored it until it’s ready to be digested.
Pani-rosa [81]

Answer:

Chyme

Explanation:

a thick semifluid mass of partially digested food and digestive secretions that is formed in the stomach and intestine during digestion. In the stomach, digestive juices are formed by the gastric glands; these secretions include the enzyme pepsin, which breaks down proteins, and hydrochloric acid.

5 0
2 years ago
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