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Artist 52 [7]
3 years ago
15

What factors help veins push blood back to the heart

Chemistry
1 answer:
Vladimir79 [104]3 years ago
5 0
Contractions of the skeletal muscles
As it puts pressure and moves the blood along
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There are many factors that influence the population changes of an ecosystem. Which of these does not influence population size
devlian [24]

Answer:

B. An animal's weight

Explanation:

An animal's weight is the factor that does not influence population size in an ecosystem because this factor does not cause an increase or decrease the population of animals in an ecosystem. The birth and death rate of animals and number of animals in habitats are the factors that tells us about the increase and decrease in the population of organisms in an ecosystem but weight of organism can't affect the population.

7 0
3 years ago
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Compare the structure and function of rhizoids and stolons? please help I need this answer for science
ladessa [460]
structural difference between  Rhizoids and  stolons
 Rhizoids   are  root  like  structure  organs    while   stolons  are a  specialized  type  of  horizontal   above  the  ground

functional  difference
 Rhizoids  absorb  water  and  nutrient ,  They  keep  plant  attached  on  the  soil  while  stolons  are  propagation  of  the  plant.
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3 years ago
Is Amplitude a measure of a waves? A. speed B. energy C. distance D. frequency
iren2701 [21]

the answer is C. Distance

hope this helps :)

5 0
3 years ago
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What is the name of the polyatomic ion in the compound na2o2?
EastWind [94]
Sodium peroxide is the answer!
3 0
3 years ago
What is the equilibrium constant expression for the reaction below?<br> H2 (g) + I2 (g) → 2 HI(g)
brilliants [131]
<h3>Further explanation</h3>

Given

Reaction

H₂ (g) + I₂ (g) → 2HI(g)

Required

The equilibrium constant

Solution

The equilibrium constant is the value of the product in the equilibrium state of the substance in the right (product) divided by the substance in the left (reactant) with the exponents of each reaction coefficient

The equilibrium constant for reaction  

pA + qB ⇒ mC + nD  

\large {\boxed {\bold {K ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}

So for the above reaction :

\tt K=\dfrac{[HI]^2}{[H_2][I_2]}

8 0
2 years ago
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