The Earth’s atmosphere is divided into five layers. In which layer does all life exist?

Question 1 options:

Exosphere


Stratosphere


Mesosphere


Troposphere

Question 2

As you travel from the surface up through the atmosphere in outer space, the gases or air pressure becomes



Question 2 options:

more dense/increases


less dense/decreases


Higher in temperature


Consistently lower in temperate

Question 3

This gas is found in the stratosphere where it helps protect us from UV radiation.

Question 3 options:

Ozone


Oxygen


Nitrogen


Carbon dioxide

Question 4

What is the most abundant gas in our atmosphere?



Question 4 options:

oxygen


hydrogen


nitrogen


water vapor

Question 5 (1 point)
This vascular tissue carries water absorbed by the roots to the other parts of the plant.



Question 5 options:

phloem


xylem

Question 6 (1 point)
The protist seen here is called euglena. It is both animal-like and plant-like. It eats food but it also has chloroplasts like a plant cell, in order to make food. The euglena has one structure that helps it move. It is visible here. What is that cellular structure?





Question 6 options:

Cilia


Flagellum


pseudopod


Golgi Bodies

Question 7 (1 point)
Which kingdom is MOST LIKELY to contain organisms that are decomposers?



Question 7 options:

Kingdom Fungi


Kingdom Eubacteria


Kingdom Animalia


Kingdom Plantate

Question 8 (1 point)
In the oceans the colder water sinks into deep basins, while warmer water stays closer to the surface. The water then moves around the ocean basin. This causes



Question 8 options:

Tidal waves


Wind Drifts


Ocean convection currents


Plate tectonics

Question 9 (1 point)
Which best explains how insects help flowering plants in reproduction?



Question 9 options:

Insects help keep predators, like birds, away from flowers' seeds


Insects store food in flowers, providing nutrients flowers need to make seeds.


Crawling insects cause pollen to fall on the ground beneath flowering plants.


As they fly, insects spread pollen that sticks to their bodies from the flowers.

Question 10 (1 point)
Jaime is picking out a skillet for his mother as a birthday present. He is looking at two skillets, one with a plastic handle and one with a metal handle. Thinking just about safety, which handle would you recommend to Jaime and why?

Question 10 options:

The metal handle, because it will last longer.


The plastic handle, because it is light weight


The metal handle, because it is a good conductor


The plastic handle, because it is a good insulator.

Question 11 (1 point)
Fungi is a very simple eukaryotic organism. Unlike plants and some protists, fungi is a consumer. This example lives in/on a tree. How is this fungus consuming food in the picture?







Question 11 options:

The roots of the fungus can absorb nutrients from the soil.


The hyphae, or feeding structures, reach deep into the wood to obtain nutrients.



The white cap of the fungus traps small insects and other organisms as they pass by.



The cap of the fungus can absorb chemicals from the air, like carbon and oxygen, and use the gases to make food.

Question 12 (1 point)
The type of energy stored in food and batteries is



Question 12 options:

kinetic energy


chemical energy


mechanical energy


electromagnetic energy

Question 13 (1 point)
The Law of conservation of energy states that energy cannot be



Question 13 options:

Stopped or started


Hot or cold


created or destroyed


Kinetic or potential

Question 14 (1 point)
A current-carrying coil of wire with many loops that can become magnetized is called a(n)



Question 14 options:

Insulator


Electromagnet


Resistor


Aurora

Question 15 (1 point)
Heat transfers occurs



Question 15 options:

Only from cold to hot


Both a and c


Only from hot to cold


It doesn’t transfer

Question 16 (1 point)
Malcolm's class has been assigned a project in which it is to build a four-wheeled vehicle to transport a can of soda across the classroom. The car will be powered by stretching rubber bands around an axle before releasing the vehicle on the floor.

The vehicle will be powered by transforming _______ energy into _______ energy.



Question 16 options:

Thermal; mechanical


Mechanical, thermal,


Kinetic, elastic potential


Elastic potential, kinetic,

Answer:

1. troposphere

2. less dense/decreases

3. ozone

4. nitrogen

5. xylem

6. flagellum

7. kingdom fungi

8. Ocean convection currents

9. As they fly, insects spread pollen that sticks to their bodies from the flowers.

10. the plastic handle, because it is a good insulator.

11. The hyphae, or feeding structures, reach deep into the wood to obtain nutrients

12. chemical energy

13. created or destroyed.

14. electromagnet

15. c

16. kinetic, elastic potential

Which of the following are true about both the sun and the stars? Choose the three correct answers.

A.
Both are visible during the day in summer.

B.
Both move across the sky from east to west.

C.
Both change positions in the sky due to Earth's revolution.

D.
Both are visible at night in winter.

E.
Both appear in different positions in the sky due to Earth's rotation.

F.
Both move from north to south in the sky.

All substances freeze at the same temperature, so they all have exactly the
same freezing point.
O True
O False

What are the purpose of a chemical equation check all that apply

What does (endangered wildlife) mean ?

answer it for 70 piontssssss !!!!!!!!!!​

24. What is the total number of grams of potassium chloride needed to saturate exactly 300 grams of water at 10°C?
1) 70 2) 90 3) 80 4) 60

How many electrons can beryllium lend

How many moles of O are in 11.6 mol Fe(NO3)3?
Express your answer in moles to three significant figures.

Which of the following characterizes a reaction at equilibrium?
A. The forward reaction stops, and the backward reaction starts.
B. The forward and backward reactions are equal.
C. The forward and backward reactions stop happening.
D. The reactants are changed into products.
SUBMIT

pls help will give brainilest or however you spell it

define saturated and unsaturated fats​

if the pressure, volume, and tempature of a gas are known which can most likely be found by using the ideal gas law
• the molar amount of the gas
•the partial pressure of the gas
•the stand temperature
•the molar mass

define saturated and unsaturated fats​

Which of the following best describe the parts of the volcano?
a .mountain or hill
B. are openings in the earth surface
c. are found only on land D. composed of caldera, vent and crater​

water is a ____ molecule meaning the positive hydrogen end attracts the negative oxygen ends of another

A. balance
B.universal
C. wet
D.polar

please answer! will give brainliest

A tank of gas is found to exert 8.6 atm at 38°C. What would be the required
temperature to change the pressure to standard pressure?

What are 2 substances that DO NOT REACT?​

The elements Beryllium (Be), Magnesium (Mg), Calcium (Ca) and Strontium (Sr) are all what?

Which line (A or B) represents a faster
speed?

Which statement best describes the use of a chemical indicator in a titration?

A. It must be measured to the nearest 0.01 mL.

B. It must be colored in the acid solution.

C. It must measure pH directly at all pH values.

D. It must change color near the equivalence point.​

10. Which best explains why the total mass of the product(s) would be less than the total weight of the
reactant(s) after a chemical reaction?
А
A physical change occurred.
B
Atoms involved in the reaction lost mass.
с
Precipitates were created in the new solution.
D
Gases were released to the atmosphere.

Which statement about the atomic nucleus is correct?A.The nucleus is made of protons and has a negative charge.B.The nucleus is made of protons and neutrons and has a negative charge.C.The nucleus is made of electrons and has a negative charge.D.The nucleus is made of protons and neutrons and has a positive charge.

Explain why this substance is formed?

A compound is found to contain 29.67 % sulfur and 70.31 % fluorine by mass.

To answer the question, enter the elements in the order presented above.

QUESTION 1:
The empirical formula for this compound is

PLEASE HELP!! IM BEING TIMED
It takes 1 frame, 1 seat, 2 pedals, and 3 wheels to make 1 tricycle. If I start with 200 frames, 200 seats, 200 pedals and 240 wheels, how many tricycles can you make? What did you run out of? What is the limiting reactant?

For number 2 I need help with balancing equations and list the type of reaction plz and thank you

if the temperature of 20.0 L of gas were increased to twice the initial value, while the pressure is held constant what would be the volume of the gas at the new temperature

Suggest why sodium wasn’t produced until the early 19th century.

5.14 x 1023 ions NaCl to Moles

how does berylium apply to real life​