Answers: 1
Biology, 21.06.2019 17:50
Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting
Answers: 1
Biology, 21.06.2019 18:00
The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community
Answers: 2
Biology, 22.06.2019 05:00
Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation
Answers: 1
Biology, 22.06.2019 10:30
Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.
Answers: 1
The diagram below represents a change in guard cells that open and close pores in a plant) this chan...
Social Studies, 27.09.2021 18:50
Biology, 27.09.2021 18:50
Mathematics, 27.09.2021 18:50
Mathematics, 27.09.2021 18:50
Mathematics, 27.09.2021 18:50
Social Studies, 27.09.2021 18:50
History, 27.09.2021 18:50
Computers and Technology, 27.09.2021 18:50
Mathematics, 27.09.2021 18:50
English, 27.09.2021 18:50
English, 27.09.2021 18:50