Biology, 20.07.2019 14:00 kcarstensen59070
Which category of materials does concrete belong to and why? a. it’s a synthetic polymer because it’s a product of a chemical reaction. b. it’s an alloy because it contains layers of different components. c. it’s a ceramic because it contains substances such as sand and clay. d. it’s a composite because it’s a mixture of cement, sand, and other granular pieces.
Answers: 1
Biology, 22.06.2019 03:00
Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .
Answers: 1
Biology, 22.06.2019 11:30
Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different
Answers: 2
Biology, 22.06.2019 20:40
Lumps of iron and manganese ore called can be harvested from the seafloor near underwater volcanoes.
Answers: 1
Which category of materials does concrete belong to and why? a. it’s a synthetic polymer because it...
Social Studies, 01.08.2019 12:50
History, 01.08.2019 12:50
Biology, 01.08.2019 12:50
Mathematics, 01.08.2019 12:50
Mathematics, 01.08.2019 12:50
History, 01.08.2019 12:50
History, 01.08.2019 12:50
English, 01.08.2019 12:50
Biology, 01.08.2019 12:50
Mathematics, 01.08.2019 12:50
Mathematics, 01.08.2019 12:50
English, 01.08.2019 12:50
Mathematics, 01.08.2019 12:50