Answer:
Proton and neutron.
Explanation:
The atoms consists of three sub atomic particles - proton electron, and neutron. The proton and neutron are present inside the nucleus and electrons revolve around the nucleus.
The number of proton is equal to the number of electron in the neutral stage of atom. The atomic mass of an element can be calculated by the sum of number of neutrons and the number of protons. Hence, the subatomic particle - proton and neutron contribute to the mass of hydrogen.
Thus, the correct answer is option (b) and (d).
Answer:
lithosphere, hydrosphere, and atmosphere
Explanation:
Recently, microalgae have been recognized as a promising platform for biofuels production and biorefineries. Microalgae have very high growth rates when compared with that of terrestrial plants, thereby demonstrating high CO2 fixation efficiency and high biomass productivity.
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The process is called Cytokineses.