BIOLOGY HIGH SCHOOL

Which abiotic factor mainly distinguishes marine water from the fresh water? a) Temperature b) Dissolved Oxygen c) Salinity d) Surface tension​

Answers

Answer 1
Answer:

Answer: c) Salinity

Explanation:

The difference between freshwater and marine water is the presence of salt diluted in water. For this reason, freshwater is also known as non-salinity, on the other hand, marine water has a bigger quantity of salt dissolved in water, for this main reason organisms that live in one ecosystem hardly survive in the other one.

Related Questions

Blood normally flows from the capillaries directly intoA. Small arteries B. Small Veins C. Lymph vessels D. Heart atria
Joseph Smith is looking for a summer job as a bookkeeper or accounting assistant. Look at his resume. Then answer thequestion.What changes should Joseph make to this resume? Select three options.Use a font that is easier to read and less ornate.Fix the formatting so it is consistent throughout.Change “graduating this year" to show the date.Remove "Jackson Accountants" from "Experience" since it is an unpaid job.Remove "Ma's Pizza" from "Experience" since it is not related to this summer job.
What's the difference between cytoplasm & protoplasm?​
How do you define military codes?A. strict rules about how soldiers behave. B. secret languages used for communication. C. secret plans for attacking the enemy. D. strict rules about military strategy.
The amount of energy lost at the transition between each trophic level of the pyramid of energy is about _______.

Which statement about plants cells is MOST accurate?A) Plant cells take in nutrients by phagocytosis.
B) Plant cells do not need nutrients since they make their own food.
C) Plant cells get nutrients through the decomposition of organic matter.
D) Plant cells, like animal cells, take in small molecules through the cell membrane.

Answers

i would say D :) I hope i helped

PLEASE HELP!!!!!!!1) If you were lost at sea and you drank salty seawater, what would you expect to happen to the cells in your body?(shrink,swell,or stay same size )why do you think that?

2) A large-mouth bass is taken from a fresh water lake and transplanted into the river. If the conditions for survival are optimal, would you expect the cells in the fish to shrink,swell,or stay same size why do you think that?

3) If a sea star egg is taken from the ocean and put into Elk Lake would you expect the egg to shrink ,swell,or stay same size why do you think that?

Answers

1. The correct answer is; are body cells is going to shrink. Salty seawater is a hyperosmotic solution, meaning that it has more solutes than the cell inside. The water will move (from the cell) via osmosis in order for the solutions to reach equilibrium. Also, salty solution exerts more pressure on the of the cell, so the cell will shrink.

2. The correct answer cells in the fish will stay the same size. This will occur because both solutions, freshwater lake and river have similar (or equal) solute concentrations. Those solutions are called isosmotic. There is no movement of water or the solutes, so the cell stays the same.

3. The correct answer is to swell.This will happen because sea star egg has the same solute concentration as its first environment-ocean meaning that this solution is hyperosmotic comparing to the lake (ocean is saltier than the lake, it has more solutes). When you put the sea star egg in the lake, the water from the lake will move (via osmosis) into the egg, to reach equilibrium. Water will cause the cell to swell.
1) Our body cells would shrink because the excessive assumption of salt (from the salty seawater), would lead us to use and expel the clean/fresh water we already have out of our body (we'd urinate more as our kidneys would try hard to expel the salt, and we'd use more water than usual as our cells would try to dilute the salt); 

2) I would expect the cells in the fish to stay the same size as both waters have a similar environment and saline level;

3) I'd expect it to swell because the ocean is saltier than lakes; it would swell because it would absorb more water than it did its usual environment.

Radium has a half-life of 1,620 years. In how many years will a 1 kg sample of radium decay and reduce to 0.125 kg of radium?3,240 years

6,480 years

4,860 years

1,620 years

Answers

4680 years

1 x .5 = .5

.5 x .5 = .25

.25 x .5 = .125

You multiplied 3 times, so 3 times 1,620 is 4,680.

What is the importance of chlorophyll

Answers

chlorophyll is like hemoglobin to us it consists of one magnesium molecule and four oxygen molecules without chlorophyll plants couldn't photosynthesis as it catches the solar energy, this is why yellow trees cannot survive the chlorophyll is gone and without it it cannot sustain itself.

In which layer of the atmosphere do birds fly?a. The mesosphere
b. The stratosphere
c. The thermosphere
d. The troposphere

Answers

D. The troposphere

hope it help

What are your chances for tossing a head? What are your chances for tossing a tail?

Answers

Fifty/fifty because each makes half of one whole coin.
There is a 50 % chance you'll get head and a 50 % chance you'll get tail
Other Questions
Which part of an atom has no charge? *protonneutronelectronnucleus
Which of the following would be the best soil for gardening?. A] A soil that is 35 percent sand, 30 percent clay, and 35 percent silt. . B] A soil that is 10 percent sand, 80 percent clay, and 10 percent silt. . C] A soil that is 5 percent sand, 20 percent clay, and 75 percent silt. . D] A soil that is 85 percent sand, 10 percent clay, and 5 percent silt. .
Mrs. Hendren has decided that she would like to grow some tomatoes and wants to know how much light is the best amount, so she plants tomato seeds in 4 different pots and leaves one pot in the dark, she gives 6 hours of light a day to the second, eight hours of light a day to the third, and ten hours of light a day to the fourth. After 3 months she measures the size of the tomatoes grown. What is the independent variable?​
Roots have all of the following functions EXCEPT to ____.a. anchor the plant c. store food b. absorb water d. make food