Biology, 05.05.2021 02:50 madisonbrookecallis
Please help I WILL GIVE BRAINIEST TO WHO GETS IT CORECT. A fossil was discovered that was 17,100 years old. The initial amount of radioactive Carbon 14 was expected to be about 1.6 g. How much radioactive Carbon-14 remains in the fossil if the half life of radioactive Carbon-14 is 5700 years.
Answers: 3
Biology, 21.06.2019 19:30
Select the correct answer. in the image, if the washcloth represents consumed food, which organ of the digestive system correctly represents the action performed by the hands? hands squeezing water from a washcloth a. esophagus b. large intestine c. liver d. mouth
Answers: 2
Biology, 22.06.2019 01:30
Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.
Answers: 1
Biology, 22.06.2019 07:40
Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one
Answers: 1
Biology, 22.06.2019 08:30
What are some natural processes that represent physical and chemical changes?
Answers: 1
Please help I WILL GIVE BRAINIEST TO WHO GETS IT CORECT.
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