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
SIZIF [17.4K]
3 years ago
7

Which of the following advances in food production were attributed to the green revolution of the 1960's and 1970's

Chemistry
2 answers:
ioda3 years ago
6 0
C improved irrigation systems

bulgar [2K]3 years ago
5 0

b.drought-resistant varieties of crop plant

just took the test and this was he answer

You might be interested in
If Z is the symbol for an element, which pair among the following represents isotopes of the same element?
anygoal [31]
<span>B. 51 50
Z and Z
25 25

It is because only this element have equal number of Protons (Bottom number) and are different in atomic masses (upper number)

Hope this helps!</span>
3 0
3 years ago
Read 2 more answers
What are bacteria I don't get what bacteria is so what is bacteria?
mafiozo [28]
Bacteria is single-celled microorganisms. Bacteria have different shapes and can cause diseases.
6 0
3 years ago
Read 2 more answers
A 248-g piece of copper is dropped into 390 mL of water at 22.6 °C. The final temperature of the water was measured as 39.9 °C.
max2010maxim [7]

Answer:

The answer to your question is: Initial temperature of copper = 67.1°C

Explanation:

Data

mass Copper = 248 g

volume Water = 390 ml

T1 water = 22.6°C

T2           = 39.9°C

T1 copper = ?

Specific heat water = 1 cal/g°C

Specific heat copper = 0.092 cal/g°C

Formula       copper             water

Heat is negative for copper because it releases heat

                  - mCp(T2 - T1) = mCp(T2 - T1)                  

                  - (248)(39.9 - T1) = 390 (1)((39.9 - 22.6)           Substitution

                 -9895.2 + 248T1 = 390(17.3)                             Simplification

                 -9895.2 + 248T1 = 6747

                 248 T1 = 6747 + 9895.2

                 248 T1 = 16642.2

                 T1 = 16642.2 / 248

                 T1 = 67.1 °C                                                         Result

6 0
3 years ago
What is the mass of 0. 513 mol Al2O3? Give your answer to the correct number of significant figures. (Molar mass of Al2O3 = 102.
Margarita [4]

The mass of a 0.513 mol of Al2O3 is 52.33g.

HOW TO CALCULATE MASS:

The mass of a substance can be calculated by multiplying the molar mass of the substance by its number of moles. That is;

mass of Al2O3 = no. of moles of Al2O3 × molar mass of Al2O3

According to this question, there are 0.513 moles of Al2O3.

Mass of Al2O3 = 0.513 × 102

Mass of Al2O3 = 52.33g

Therefore, the mass of a 0.513 mol of Al2O3 is 52.33g.

Learn more about mass calculations at: brainly.com/question/8101390?referrer=searchResults

7 0
2 years ago
What is an ideal gas? how many ideal gases are there in the universe?
tiny-mole [99]
Ideal gases are hypothetical gases whose molecules occupy negligible space and have no interactions, and that consequently obeys the gas laws exactly.
Not exactly sure about the amount...
I hope this helps! :)
6 0
3 years ago
Other questions:
  • Explain why the solutions of SbCl3(aq) in our lab also contain HCl. Why would adding a few drops of this solution to 300 mL of w
    7·1 answer
  • Which of the following was a cause of the French and Indian War?
    10·2 answers
  • PLEASE HELP ! Need help now ! Thank you in advance , will mark brainliest !!
    5·1 answer
  • Which cell i this illustration is likely to come from a plant?
    10·2 answers
  • Which has a triangular fiber? <br> Wool <br> Silk <br> Cotton <br> Nylon
    12·1 answer
  • If 16 mol of oxygen were reacted with excess hydrogen gas, how many moles of water would be produced?
    9·2 answers
  • When a species cannot respond to environmental changes, members of that species begin to die. When the last member of a species
    7·1 answer
  • Prove that the liquid pressure is directly proportional to the depth of the liquid?​
    13·1 answer
  • A gamma ray has a frequency of 2.88 x 1021 Hz. What does this mean?
    11·1 answer
  • Why is the Northern Hemisphere warmer when tilted to the sun?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!