Biology, 30.10.2020 17:00 diamoniquepowel
Cedarian said that water can be created in a lab by burning hydrogen gas in air. He said that water is not a compound, because only hydrogen is used to make water. What is wrong with David’s statement?
A. A compound only contains one type of element.
B. Hydrogen is made up of two different types of atoms.
C. Water was not the product formed when he burned hydrogen.
D. Compounds must contain two elements, and oxygen from the air was what combined with hydrogen to make water.
Answers: 1
Biology, 22.06.2019 08:50
How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different
Answers: 1
Biology, 22.06.2019 15:00
Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.
Answers: 2
Cedarian said that water can be created in a lab by burning hydrogen gas in air. He said that water...
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