Non living things are abiotic so sand is abiotic
Answer:
Redox
Explanation:
Reduction is gain of electrons
oxidation is loss of electrons
Answer:
Uranium-238 undergoes alpha decay to form Thorium-234 as daughter product.
Explanation:
Alpha decay is indicative of loss of the equivalents of a helium particle emission. The reaction equation for this reaction is shown below:
→ ![_{90} ^{234} Th_{} + _{2} ^{4} He_{}](https://tex.z-dn.net/?f=_%7B90%7D%20%5E%7B234%7D%20Th_%7B%7D%20%2B%20_%7B2%7D%20%5E%7B4%7D%20He_%7B%7D)
I hope this explanation is clear and explanatory.
by radiation from the Earth's surface
Answer: Multiple covalent bonds may occur in atoms that contain carbon,nitrogen, or <u><em>oxygen</em></u>.