Biology, 26.09.2019 15:00 destanybrunson
Which of these would not be a valid scientific theory?
a all cells come from pre-existing cells.
b humans originated on earth from outer space.
c the universe is expanding at a constant rate.
d at one time, all of earth's continents were one large land mass.
Answers: 2
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, 21.06.2019 20:30
Will mark brainliest if correct/available! which of the following statements is true? all plants need flowers to sexually reproduce. sexually reproduced offspring are identical to their parents. fertilization always occurs inside the female's body. a body cell has twice the number of chromosomes as an egg cell.
Answers: 1
Biology, 22.06.2019 02:20
What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder
Answers: 2
Which of these would not be a valid scientific theory?
a all cells come from pre-existing ce...
a all cells come from pre-existing ce...
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