Biology, 06.11.2019 23:31 mrnotsosmart2787
The theory says that the big bang produced the chemical elements hydrogen and helium. what evidence supports this? you find an abundance of both hydrogen and helium in all matter.
a. you find an abundance of both hydrogen and helium in all matter.
b. the composition of stars is mostly hydrogen.
c. astronomers found primordial gases with the expected ratio of helium to hydrogen.
d. primordial hydrogen gas was found and there is an abundance of both of these elements.
Answers: 2
Other questions on the subject: Biology
Biology, 21.06.2019 20:00, awdadaddda
Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red. b) the pollen grains will be pure blue. c) the pollen grains will have red interiors and blue exteriors. d) the pollen grains will have blue interiors and red exteriors.
Answers: 1
Biology, 22.06.2019 14:00, jimmyjimjim
What is one reason why transpiration is important in plants? question 19 options: it produces food from the sugar in the plant cells. it enables the flow of water out of the plant. it produces carbon dioxide in the leaves of the plant.
Answers: 1
Biology, 22.06.2019 22:00, ryantrajean7
You have trained year for a marathon. in your first attempt to run a marathon, you decide that you want to complete this 26-mile race in 4-5 hours. a. what is the length of a marathon in kilometers (1mile= 1.6 kilometers). b. what would your average speed have to be to complete the race 4.5 hours? give your answer in kilometers per hour.
Answers: 1
You know the right answer?
The theory says that the big bang produced the chemical elements hydrogen and helium. what evidence...
Questions in other subjects:
English, 18.10.2020 16:01
Mathematics, 18.10.2020 16:01
Mathematics, 18.10.2020 16:01
Social Studies, 18.10.2020 16:01
