Which elements make up 97% of the universe?
question 3 options:
hydrogen a...
Biology, 14.01.2020 20:31 nadinealonzo6121
Which elements make up 97% of the universe?
question 3 options:
hydrogen and oxygen
hydrogen and helium
helium and oxygen
oxygen and iron
Answers: 2
Biology, 22.06.2019 01:30
What macromolecule is produced during translation? a. carbohydrate b. rna c. dna d. protein
Answers: 2
Biology, 22.06.2019 09:30
Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.
Answers: 1
Biology, 23.06.2019 01:30
Peat deposits are found in waterlogged places where dead plant material piles up. when peat is buried, it undergoes compaction. it is subjected to heat and pressure for a long time, and a lot of water is squeezed out during this process. nearly ten vertical feet of original peat material becomes one vertical foot of coal. which of these remains unchanged in the system during the conversion of peat to coal? a) area b) density c) mass d) volume
Answers: 2
Mathematics, 29.10.2019 07:31
World Languages, 29.10.2019 07:31
English, 29.10.2019 07:31
History, 29.10.2019 07:31
History, 29.10.2019 07:31
Mathematics, 29.10.2019 07:31
Arts, 29.10.2019 07:31
Arts, 29.10.2019 07:31
Mathematics, 29.10.2019 07:31
English, 29.10.2019 07:31
Social Studies, 29.10.2019 07:31