11 The diagram below shows two important parts of the human digestive system.

Answer:

A c B

Explanation:

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When telescopes are looking at objects that are really far away, they are actually looking back in time.


True
False

Jolene wants to experiment with sugar cubes. Which of the following causes a sugar cube to only change physically, not chemically?
a) burning the sugar cube with a match stick.
b) crushing the sugar cube and dissolving it in water.
c) dehydrating the sugar cube with sulfuric acid.
d) chewing the sugar cube and digesting it.

I have no idea what this is about, I keep reading it over and other again, but I still don't understand! Help?

The temperature of a plastic cup is 70ºF. It is filled with water that is 40ºF. Which of the following describes how thermal energy is transferred?

a. Thermal energy is transferred from the cup to the water until they are both at 45ºF.

b. Thermal energy is transferred from the cup to the water until the cup is at 60ºF and the water is at 50ºF.

c. Thermal energy is transferred from the water to the cup until they are both at 45ºF.

d. No thermal energy is transferred between the cup and the water, so the cup will stay at 70ºF and the water will stay at 40ºF.

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Could someone pls help me with this too?

The diagrams show two different ways that water, methane, and acetic acid can be modeled. Look closely at each type of model. Explain what each type of model shows best.


HELP ME PLZ!


T^T

What type of cells make up all parts of the human body?
Select one:

Prokaryotic cells

Eukaryotic cells

Archaea cells

Circular cells

Why have ice ages come and gone?

Compare and contrast the Andes Mountains and the Rocky Mountains. How are they formed? What consumers and producers are in each? First reasonable answer gets brainly

in a neap tide, the moon's effect on blank

How do telescopes help astronomers learn more about the universe?



a. Telescopes gather more light than the n a k e d eye can see.


b. Telescopes gather less light than the n a k e d eye can see.


c. Telescopes change the color of the light that we see.


d. Telescopes apply a filter to the light that we see.

NEED HELP! SCIENCE HW IS DUE IN 1 HOUR!!!!!!!!
What type of changes are these and why?
C∪tting hair is a (physical/chemical) change.
Cooking is a (physical/chemical) change.
Ice cream melting in the sun is a (physical/chemical) change.
Options for Reasons
1. Change of state
2. Changes what object is
3. Causes a reaction (signifies chemicals change)

Order the colors of the visible light spectrum from longest wavelength to shortest wavelength.



green

yellow

orange

red

violet

indigo

blue

If a scientist knows the relative age of a fossil, he can also know
A.
the type of climate from which it came.
B.
the relative age of the rock where it was found.
C.
how it became extinct.
D.
how long the organism was alive.

It has been theorized that all of the modern continents on Earth were once part of a single continent. What scientific evidence is used to support this theory?
1) Fossils of similar lifeforms have been found on different continents.

2) The coastlines of some modern continents appear to have once fit together.

3) Some of the continents that exist today have similar types of rocks.

Which on is it?

A student made the table below to compare high air pressure and low air pressure. Which correction is required to make the table correct?

a table comparing air pressure. High pressure has more air above pressing down and results in stormy weather. Low pressure has less air above pressing down and results in cloudy weather.

High pressure results in clear skies.
High pressure results in less air below pressing up.
Low pressure results in more air above pressing down.
Low pressure results in sunny weather.

A student performs an exothermic reaction in a beaker and measures the temperature. If the thermometer initially reads 35 degrees Celsius, what is a possible reading of the thermometer after the reaction? A. 35 degrees Celsius B. 0 degrees Celsius C. 45 degrees Celsius D. 25 degrees Celsius

In Kevin’s favorite comic book, the superhero has special powers. In one adventure, the superhero must stop an evil villain who threatens to destroy the city with a powerful energy blast.

As he confronts the villain, he makes the following claims:
1: “I can create an energy force field to save the city.”
2: “I can destroy the energy before it destroys the city.”
3: “I can convert all the energy before it can do any harm to the city.”
4: “I can absorb all the energy and make it go away.”

If the superhero must obey the law of conservation of energy, which of the above can he actually do?

a. 1

b. 2

c. 3

d. 4

Nirates and phosphates are important chemicals to living things. Explain why these chemicals can also be pollutants.

I have asked this already!!!!!

Which of the following are true when milk changes into curd?
(i) Its state is changed from liquid to semi-solid.
(ii) It changes colour.
(iii) It changes taste.
(iv) The change cannot be reversed.

Choose the correct option.
a) (i) and (ii)
b) (ii) and (iii)
c) (i), (iii) and (iv)
d) (i) to (iv)

An index fossil represents a species that lived during
A.
a long interval of Earth's history.
B.
Earth's entire history.
C.
a short interval of Earth's history.
D.
several intervals of Earth's history.
which one is it?

I need help with this one

Select each correct answer. More than one answer may be correct.
Which of the following contributes to the phases of the Moon as seen from Earth?

the Sun lighting different parts of the Moon at different times
the Moon orbiting the Earth
varying amounts of the Moon's lit surface being visible from Earth

Why are astronomers sending telescopes, like the Hubble Space Telescope, into space?



a. It puts the telescope closer to the sun.


b. It allows for the telescope to stay colder.


c. It's cheaper and more efficient to store the telescopes in space.


d. It lessens the effect of the atmosphere.

The graph below shows the mechanical energy of a car on a roller coaster at four different locations.



Which of the following is a supported by evidence from the graph?

Potential energy increases but kinetic energy stays the same during a roller coaster ride.

Kinetic energy and potential energy change, but energy is neither created nor destroyed during a roller coaster ride.

Potential energy is destroyed during a roller coaster ride.

Kinetic energy is created during a roller coaster ride.

Design Report
Design a Thermos
It’s time to complete your Design Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U2_ Lab_DesignAThermos_Alice_Jones.doc).
Problem and Constraints
1. What was the problem you tried to solve in your design challenge?
Type your answer here:
2. What were the constraints of the design challenge?
Type your answer here:
Plan
1. Draw a sketch of your design. Include labels and notes about how your design fits the constraints.
Type your answer here:
Test
1. Describe the procedure that you followed to test your design.
Type your answer here:
2. Describe the results of your design test.
Type your answer here:
Evaluation
1. Evaluate your design by describing how well the device performed and whether it met the constraints and solved the problem.
Type your answer here:
2. Revise your design by creating a sketch of an improved model. Describe how the new design is an improvement over the original.
Type your answer here:

OK I NEED HELP ON THESE BUT CAN U PLEASE LIKE EXPLAIN Y

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