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marin [14]
3 years ago
15

Are scientific theories all proven facts?

Chemistry
2 answers:
SSSSS [86.1K]3 years ago
8 0
No! That’s why they’re called theories. Most of them have a lot of facts to back it up however the theories themselves are either proven or just hypothetical.
Triss [41]3 years ago
8 0

Answer:

Any scientific theory must be based on a careful and rational examination of the facts. Facts and theories are two different things. In the scientific method, there is a clear distinction between facts, which can be observed and/or measured, and theories, which are scientists' explanations and interpretations of the facts.

Explanation:

A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results.

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ivolga24 [154]

Answer:

d. white blood cells

Explanation:

It is the white blood cells that have the least tendency to cross the blood- brain barrier.

Blood- brain barrier is psychological barrier and restricts substances that circulate into the blood from crossing over the central nervous system.

Water, glucose as well as sodium ions can easily cross the barrier. As these are good for body supply energy to the brain.

8 0
3 years ago
(First to answer gets some good) Order the following components of the universe from largest to smallest: Moon, planet,universe,
cluponka [151]

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Universe, galaxy, solar system, star, planet, moon and asteroid.

Explanation:

You're welcome!

7 0
4 years ago
HELP IT’S ABOUT TO BE DUE!
Vinil7 [7]
The answer is b
Explanation:
7 0
3 years ago
which of the following statements correctly describes the relative masses of the particles in atoms ​
zysi [14]

Answer:

protons and neutrons

Explanation:

protons and neutrons is equal to mass number

6 0
3 years ago
It is found that the new element contains 74 protons and 110 neutrons. What is the atomic number of the element
jarptica [38.1K]

Answer:

74

Explanation:

we know,

atomic number = number of protons

so,

atomic number = 74

6 0
3 years ago
Read 2 more answers
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