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leva [86]
2 years ago
7

Scientist believe that about 20 to 25% of the universe is made of

Biology
2 answers:
zvonat [6]2 years ago
6 0
I think its dark matter 
ololo11 [35]2 years ago
3 0

Answer:

The answer is Dark Matter.

Explanation:

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The rock cycle and water cycle overlap with erosion, transporting, and deposition.carbon atoms are used repeatedly on Earth and cycled between the atmosphere, hydrosphere, biosphere, and lithosphere through processes

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What is the mass of an element with 15 protons, 13 electrons, and 11 neutrons?
RSB [31]

Answer:

B. 26amu

Explanation:

The nucleus of an atom in an element contains protons, electrons and neutrons. The proton number equals the electron number in a neutral atom. The proton number is also called the atomic number, denoted by Z.

The mass number also called Atomic mass unit (amu) in this case, of an element is the sum of the proton number and the neutron number in the atom of that element. The mass number is denoted by A.

Hence, A = Z + N

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If two heterozygous tall peap plants are crossed. What is the expected phenotypic outcome for the offspring?
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