Answer:
Atom
Explanation:
An atom is the most simple and basic form of matter which cannot be broken down any further.
The independent variable has to do with the amount of water put onto the rock; the dependent variable is the mass of the rock after it has been in the water.
Nucleic acid:
DNA is responsible for directing the cellular function. The nucleic acids are responsible for the storage of genetic information.
The DNA and RNA are the nucleic acids present in an organism. The DNA is the double stranded helix and comprises of sugars, nitrogenous base and a phosphate group. Deoxyribose is the sugar present along with 4 nitrogenous bases which are adenine, guanine, thymine and cytosine. These bases code for proteins which are responsible for carrying out range of activities such as cell growth, cell division and cell signalling.
RNA has ribose sugar and 4 nitrogenous base. Thymine is replaced by uracil in RNA. There are three types of RNA: rRNA, mRNA, and tRNA.
Learn more about nucleic acid here:
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Answer:
<u>D:</u><u> </u><u>the crust of the lithosphere that has fractured along plate boundaries and ridges</u>
Explanation:
These fault lines in the lithosphere along plate boundaries and ridges are the causes of natural disasters like earthquakes.
