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
Sergeu [11.5K]
3 years ago
13

The overall long-term effects of air pollution are not yet certain. True False

Chemistry
2 answers:
pentagon [3]3 years ago
7 0

Answer:

its true

Explanation:

because I made sure it was true and it is

Viktor [21]3 years ago
6 0
I’m pretty positive the answer is True
You might be interested in
Which feature of four different marine fossils makes the fossil organism most similar to the present-day organism with four limb
zvonat [6]
I found the rest of the exercise on the internet and these are the options.
"-Undifferentiated vertebrae throughout the body.
-One neck vertebra allowing up and down movement.
-Many neck vertebrae that allow for greater mobility.
<span>-Two neck vertebrae allowing up and down and sideways movement."

The correct answer would be the third. - "</span>Many neck vertebrae that allow for greater mobility." The <span>present-day organism with four limbs has a neck with several vertebrae that allow movements of rotation (mostly because of only two vertebrae at the top of the neck), and side way movements, as well as back and forth movements.</span>
6 0
3 years ago
What atom has 2 electrons, 6 protons and 7 neutrons
Deffense [45]

Answer:

Carbon atoms with 7 neutrons have an atomic mass of 13 (6 protons + 7 neutrons = 13). These atoms are the isotope called carbon-13.Jul

7 0
3 years ago
When was copper discovered?​
Vesna [10]

Answer:

9000 BC

Explanation:

Although various copper tools and decorative items dating back as early as 9000 BCE have been discovered, archaeological evidence suggests that it was the early Mesopotamians who, around 5000 to 6000 years ago, were the first to fully harness the ability to extract and work with copper.

3 0
3 years ago
Heating a substance____the speed at which molecules move
guapka [62]

Answer:

Heating a substance increases the speed at which molecules move.

Explanation:

4 0
3 years ago
Read 2 more answers
Which body part MOST LIKELY formed this fossil?<br> blood<br> B<br> bones<br> fur<br> D<br> skin
Inessa [10]

Answer:

Bones are the correct answer.

8 0
2 years ago
Other questions:
  • An atom is composed of protons, neutrons, and electrons. What is the electric
    13·1 answer
  • H2o, ch4, secl2, chcl3 lowest boiling point
    8·1 answer
  • Calculate the mass of 139 cm^3 Argon at STP
    6·1 answer
  • Select all the correct answers,
    8·1 answer
  • Iron (III) oxide - what does<br> the III mean?
    5·1 answer
  • What is the definition of a Lewis acid?
    14·1 answer
  • The half-life of Radium-226 is 1590 years. If a sample contains 100 mg, how many mg will remain after 4000 years?
    8·1 answer
  • 2. A sample of table sugar (sucrose, C12H22O11) has a mass of 1.202 g.
    5·1 answer
  • Why melting and boiling points can be used as a way to check purity?​
    12·1 answer
  • In order to break water into hydrogen and oxygen, water is heated to more than 500°C. Which kind of reaction is this and
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!