What is the average salinity of sea water?
3.5% salt and other minerals
4.2% salt and other minerals
2.4% salt and other minerals
3.0% salt and other minerals

The average salinity of water is approximately 3.5%, or 35 parts per thousand.

This implies that for every 1 litre of sea water there are 35 grams of salts dissolved in it.

Even though a vast majority of seawater is found in oceans with salinity around 3.5%, seawater is not consistently saline throughout the world.

Ifa rock had 80 radioactive atoms in it when it was formed and it now has 20 radioactive elements in it, how old is the rock?

Lina applies a constant force of 30 N as she pushes a dresser 3 m. How much work did Lina do on the dresser

What type of relationship does the Cook Islands have with New Zealand, and how does it benefit from this relationship? plz have at least 5 sentances.

Which of the following is not one of the three branches of government in Australia and New Zealand?
A.
judicial
B.
legislative
C.
republican
D.
executive
PLZ HURRY!!

What are the three primary colors of light? (Select three.)

violet
indigo
blue
red
green
yellow

Point A is to the left of Point B on a horizontal number line.

What could be the values of Point A and Point B ?

Hey can anyone come help with this?

it's actually pretty easy but ima still ask

What is the difference between refraction and reflection?

In refraction, light travels from one medium to another.
Refraction only happens in liquids.
In reflection, light travels from one medium to another.
Reflection only happens in a liquid.

PLEASE HELP! DUE SOON!! I'll give Brainlest!
Describe how ice wedging and plant roots are similar in breaking rocks down.

How many half-lives did the rock go through? 4. If a rock had 40 daughter atoms present, how old would the rock be?

Many people in South America are subsistence farmers. Subsistence farming is...
A
growing only enough crops for food to fed the family.

B
focusing on growing cash crops to sell to make money.

C
growing only one type of crop.

D
growing crops in higher elevations.

True or False: 100 year old soil has less nutrients in it than 20 year old soil.

does confining stress increase volume

100%
How does freezing water cause the weathering of rocks?
A. holds them in place
B. makes them longer
O
C. cracks them
0
D. makes them thicker
o
E.makes them heavier

According to geographers’ estimates, two out of three people in the world will live in a city by the year 2030. This migration to urban centers creates an increase in urban populations, resulting in the formation of megacities. Geographers define a megacity as any city with a population of more than 10 million people. Today, there are 25 megacities in the world.

Explore this resource on megacities, clicking through the interactive and reading about a few megacities in the world. Then pick two cities, research them, and create a profile about them. For each city, include the following information:

location
brief history of the city
population density
problems currently facing the city
what city planners are doing to address the city’s problems
what city planners could be doing differently

Which of these colors are the main colors of visible light?

peace
pink
gold
red
violet
indigo
green

help ill give brainliest

How many half-lives did the element go through?

Which objects would cause refraction of light?

eyeglasses
wooden box
magnifying glass
prism

Savannah’s location contributed to the city’s early economic success because it enabled the city to