1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kogti [31]
3 years ago
14

Help on science please!

Chemistry
1 answer:
erik [133]3 years ago
6 0

Answer:

See explanation.

Explanation:

1. Forrest: From 425,000,000 to 300,000,000 is a change of 125,000,000. Divide the 125,000,000 by 425,000,000 to get the percent change:

125,000,000 / 425,000,000 = .294, which is a 29.4% change, a decrease.

2. Population: From 4,500 to 326,500,000 is a change of 326,495,500. Divide 326,495,500 by 4,500 to get the percent change.

326,495,500 / 4,500 = 72,554.55 which is a change of 7,255,455% change, an increase.

3. Conclusion: The growth in population required living area. People needed farms, houses, cities, and communities to live in. Forests were cleared to make room for the people to live. Forests are also used to provide building materials. The population increase contributed to the decrease in forest lands.

You might be interested in
Can you guys give some science fair project ideas(8th grade)
Anton [14]
Answer
i’m in 7th grade but for this years science fair i did, “ how does temperature affect the elasticity of rubber bands”

Guide a growing plant through a maze.
8th Grade Science Plant Maze KiwiCo

Prove that plants really do seek out the light by setting up a simple or complex maze. This is a simple 8th grade science project with really cool results.

Blow out a candle with a balloon.


Blowing up a balloon with baking soda and vinegar is the classic acids and bases experiment. Take it a step further by experimenting with the carbon dioxide it produces. (Don’t be afraid of fire in the science

Stand on a pile of paper cups.


Combine physics and engineering and challenge 8th grade science students to create a paper cup structure that can support their weight. This is a cool project for aspiring architects.

hope this helps and have a wonderful day :)
5 0
3 years ago
A student draws the model shown below. Which of these best compares the conditions at Location X and Location Y?
arlik [135]

Answer:

Explanation:

You have to use formula b to your answer

5 0
3 years ago
1. By means of orbital diagrams, write down the
Dvinal [7]

Answer:

a) 1s22s22p63s1

b) 3s² 3p¹

c) 1s22s22p63s23p3

d) 3s² 3p⁵

e) 3s2

f) 1s22s22p63s23p2

g) 1s22s22p63s23p4

h) 3s² 3p⁶

3 0
3 years ago
How could an alpha particle pass straight through the metal foil and strike the center of the phosphor screen on the other side
EleoNora [17]
It was due to the metal foil in which the alpha particles can't even pass through. This experiment conducted by Rutherford led to the discovery of protons.
4 0
3 years ago
Which characteristic of life is described as the transfer of DNA from parent to offspring, and is important for keeping a specie
deff fn [24]
B is correct answer I believe
5 0
3 years ago
Read 2 more answers
Other questions:
  • Terephthalic acid, an important raw material for making Dacron, a synthetic fiber, is made from para-xylene by the following rea
    13·1 answer
  • Which is one way that scientist communicate the results of an experiment
    9·2 answers
  • If liquid water is exposed to normal atmospheric pressure, what needs to change in order to change its state of matter?
    13·2 answers
  • A student determines that she used 0.0665 mol of sodium hydroxide (NaOH) to completely titrate 25.00 mL of sulfuric acid solutio
    13·2 answers
  • Draw all resonance structures for the nitryl fluoride molecule, no2f.
    5·1 answer
  • How would you prepare 3.5 L of a 0.9M solution of KCl?
    13·1 answer
  • What are metal complex formation titrations, what is an example of their use?​
    10·1 answer
  • If u have 10 moles of C2H2 how many mole of O2 would you need
    6·1 answer
  • What are the main organs for the respiratory system?
    13·1 answer
  • What are the benefits of a lilac bonnet?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!