subject
Chemistry, 12.01.2021 01:00 kaitlan225

U Question 13
1
Which best explains how photosynthesis is helpful to humans?
It reduces teh amount of harmful rays released by the sun.
It increases the levels of carbon dioxide in the air.
It provides oxygen for humans to breathe.
It produces proteins, which humans can eat.
Previous
Next

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 21.06.2019 13:30
Why are gamma rays not affected by a magnet as they pass over it? gamma rays are composed of only energy. gamma rays do not have enough mass to be affected. gamma rays do not have the right electrical charge to be affected. gamma rays move too fast for anything to affect their pathway.
Answers: 1
question
Chemistry, 22.06.2019 03:40
In an effort to address concerns about global warming, a power plant in portland,oregon is designed to take all of its exhaust gases from its boilers and recycle the co2 using the solvay process to make sodium hydrogen carbonate. the reaction is shown below. nh3(g) + h2o(l) + co2(g) + nacl(aq) → nahco3(aq) + nh4cl(aq) how many liters each of nh3 and co2 (both at stp) would be consumed to produce 3.00 kg of sodium bicarbonate? the volume of both nh3 and co2 would be
Answers: 1
question
Chemistry, 22.06.2019 15:20
Identify arrows pointing to bonding electrons. done h-0-0-h ) intro
Answers: 3
question
Chemistry, 22.06.2019 16:00
1. an experiment in your science class lists the materials needed for the lab. it is your job, as a lab partner, to measure out 25 ml of distilled water and 2.5 grams of magnesium. what lab measuring tools would you choose to measure each substance and how would you use each tool to get the correct amounts? be sure to describe the process you would follow step-by-step. (5 points) 2.which of the following is an si base unit for measuring mass? (2 points) ampere gram meter pound 3.which of the following is an si base unit for time? (2 points) decades hours minutes seconds 4.which of the following tools should a scientist use to measure an object in milligrams? (2 points) graduated cylinder pan balance tape measure thermometer 4.which of the following tools should a scientist use to measure an object in milligrams? (2 points) graduated cylinder pan balance tape measure thermometer. 5.a pencil beside a metric ruler. the ruler is scaled from 1 centimeter to 10 centimeters, with markings for millimeters between each number. one end of the pencil is beside the 0 on the ruler, and the pencil point is beside the 5. which of the following measurements is accurate but not precise? (2 points) 5 mm 5 cm 50 mm 50 cm 6. which of the following prefixes represents the largest value? (2 points) giga hector kilo milli 7. which of the following types of graphs is best for plotting the percentages of a whole value in a data set? (2 points) bar graph circle graph histogram line graph
Answers: 1
You know the right answer?
U Question 13
1
Which best explains how photosynthesis is helpful to humans?
It r...
Questions
question
Mathematics, 27.01.2021 04:30
question
Mathematics, 27.01.2021 04:30
question
Chemistry, 27.01.2021 04:30
question
Mathematics, 27.01.2021 04:30
question
Mathematics, 27.01.2021 04:30
question
Mathematics, 27.01.2021 04:30
question
Mathematics, 27.01.2021 04:30
question
History, 27.01.2021 04:30
Questions on the website: 13722362