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loris [4]
3 years ago
6

Why do populations have variaton in certain traits

Biology
2 answers:
mash [69]3 years ago
8 0

Answer:

Populations have variation in traits due to random mutation, crossing over and environmental conditions.

eduard3 years ago
7 0

Answer:

the answer is Different individual have different alleles.

<em>Hope this answer correct :)</em>

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In the phosphorus cycle, phosphorus can recycle through waste products, decomposition, and of terrestrial and aquatic ecosystems
IgorC [24]
Answer is - Assimilation

Reasoning - photosynthetic organisms such as Algae or Plants assimilation phosphorus into their cell. Which they later transfer it to animals whom consume which then starts the cycle.

I answered the same question in another post but here I'll post what I wrote with reasoning why.
8 0
3 years ago
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The proximal tubule of the nephron in the kidney is composed of
Dmitry_Shevchenko [17]

Answer:

The proximal tubule of nephron in the kidney is composed of single layer of cuboidal cells that are covered with striated borders.

Explanation:

Proximal tubules or proximal convoluted tubule is an important part of vertebrate kidney which is located between bowman's capsule and loop of Henle.

Proximal tubules are divided into 2 parts- Proximal convoluted tubules and Proximal straight tubules.

Proximal convoluted tubules are located entirely to the renal cortex and the Proximal straight tubules descend into the outer  medulla.

The major function of Proximal tubules are mainly absorption and secretion.

The proximal tubules helps to regulate the pH from the filtration and also causes sodium reabsorption that is driven by P type ATPase.70% re absorption of sodium takes place in the proximal tubules through active transport.

Moreover elimination of ammonia takes place through proximal tubules by breaking glutamine to alpha ketoglutarate.

7 0
3 years ago
How many moles of MgCI2 are there in 310 g of the compound? This question is not multiple choice. I have two blank boxes to put
pantera1 [17]
Number of Moles are calculate by using following formula,

                                        Moles  =  Mass / M.mass     --- (1)

M.mass is calculated by adding the atomic masses of all elements present in molecule, Since, MgCl₂ contains one Mg (atomic mass = 24.3 g/mol) and two Cl atoms (atomic mass = 35.45 × 2 = 70.9 g/mol), So,

                            Molar mass = 24.3 g/mol  +  70.9 g/mol

                            Molar Mass of MgCl₂ = 95.2 g/mol

Now, putting values in eq. 1,

                                        Moles  = 310 g ÷ 95.2 g/mol

                                        Moles  = 3.256 moles
3 0
3 years ago
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In the origin of species, darwin argued that the mechanism of descent with modification was _____.
prohojiy [21]
<span>The mechanism of descent with modification is known as "evolution". This idea of descendants of adult species being similar in most ways to their ancestors but slightly modified in some way is the basis of an entire belief system for some. For example it is not unreasonable to believe over time and generations, humans may develop an extra or altered digit on the hand to accommodate cell phone usage.</span>
4 0
4 years ago
Which statement best explains the principle of uniformitarianism?
Katarina [22]
A would be the answer plz mark me as the brainlest.
6 0
3 years ago
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