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Nady [450]
3 years ago
12

What defines a species' niche? i. abiotic factors ii. biotic factors iii. food web?

Biology
1 answer:
Scorpion4ik [409]3 years ago
4 0
The answer is i Abiotic factors
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Identify TWO specific human activities that result in a loss of aquatic biodiversity and explain how each activity lowers aquati
noname [10]

Answer:

Mass Carbon Dioxide and Trash being dumped into the water  

Explanation:

Carbon Dioxide kills the reefs which causes a mass amount of ecosystems being destroyed and animals eating the trash thinking its food which would be put into our systems when we catch these fish and eat them

7 0
3 years ago
How far away can a proton and an electron be from each other, such that they still exert an electric force on each other of magn
pogonyaev

Answer:

\sqrt{ \frac{2.3 *10^{-28}     }{F} }

Explanation:

Total force = Force due to gravity + Force due to charges

Total force = \frac{GMm}{r^{2} } + \frac{kQq}{r^{2} }

r is the separation between particles.

Charge of a proton(Q) = - (charge of an electron(q) ) = 1.6 * 10^-19 coulombs

Mass of a proton (M)= 1.67×10^-27 kilograms

Mass of an electron (m) =9.11 × 10^-31 kilograms

G=6.67 ×10^−11 N⋅m^2/kg^2

k=8.99 * 10 ^9 N.m^2 / C^2

Plugging in values:

Force due to gravity= (6.67 *10^−11)(1.67 * 10^-27)*(9.11 * 10^-31) /r^2 =1.01 * 10^-67   /  r^2

Force due to charges : (8.99 * 10 ^9)*(1.6 * 10^-19)*(1.6 * 10^-19) / r^2 = 2.3 *10^-28    /  r^2

We can observe that force due to charges is too large as compared with force due to charge. The ratio of Fc to Fm is 2.3* 10^39. It means that we can ignore force due to gravity.

Total force = Force due to charges.

F = 2.3 *10^-28    /  r^2

r = \sqrt{ \frac{2.3 *10^{-28}     }{F} }

3 0
3 years ago
The time in which life first evolved on Earth was the________ eon.
Anna [14]
It is the Archean Eon! :)

3 0
3 years ago
Read 2 more answers
_____ bonds form and hold the DNA together. <br> A. hydrogen <br> B. peptide <br> C. polar
miskamm [114]
Hydrogen bonds form and holdl the DNA together
8 0
3 years ago
Read 2 more answers
4. Name the three places (2 boundaries and 1 nonboundary) where volcanoes are created:
Lena [83]
Volcanic activity occurs at two types of plate boundaries: mid ocean ridges and subduction zones. Non boundary: not sure but I think it's divergent zones
3 0
3 years ago
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