Practice 3: In the human body, blood is a tissue. The job of the blood is to bring nutrients and oxygen to the different parts of thebody and remove any waste or harmful toxins. Which of the
statements below would be a reason why blood is considered a
tissue?
A. Blood is made up of one cell
B. Blood tissue moves throughout the whole body
C. Blood tissue id made up of organs that work to complete
unrelated jobs
D. Blood tissue is made up of different cells that work together to
complete the same job

What is the function of mitochondria?

What is the relationship between the salinity and density of ocean water?A decrease in salinity increases the density of seawater, altering the location of the halocline.

As salinity increases, the mass of the water increases as it holds more salt particles per unit volume, making it more dense.

An increase in salinity decreases the density of water above the halocline and increases the density of water below the halocline.

As salinity decreases, the water becomes more massive as it holds fewer salt particles per unit volume, making it less dense.

Before there was any life on earth, which gas was absent from earth’s ancient atmosphere? A. nitrogen B. ammonia C. oxygen D. methane

How many hawksbill turtles are left in the world?

A)Fossil layers below the K-Pg boundary are younger than fossil layers above the K-Pg boundary.B) Non-avian dinosaur fossils are only found below the K-Pg boundary.


" C) Mammal fossils are not found below the K-Pg boundary as they appeared after the event.


D) Fossil layers containing dinosaurs and mammals are below the K-Pg boundary.

E) Fossil layers below the K-Pg boundary are older than fossil layers above the K-Ps boundary

I GIVE 5 STARS AND A THANKS (it gives u more points)What is the effect of a temperature inversion?

It causes more use of heating oil to stay warm.
It produces a lot more ozone.
Radon from underground rocks is released.
It traps emissions close to Earth’s surface.