The correct answer is (A)
Burning of wood is a chemical change as new substance is formed during the burning of wood which is not reversible.
Now, what happened during the burning of wood?
In the case of burning wood, stored potential energy( in the form of chemical energy) in the log is released due to heating by other excited atoms. This chemical reaction is called combustion that requires oxygen. We can also say that combustion is change of potential chemical energy into kinetic energy in the form of heat.
I'm assuming this is from sugar and you're looking for the production of ethanol:
C6H1206(glucose) into 2 of C2H60 (ethanol) and 2 of CO2 (carbon dioxide).
Depending on what you are fermenting as the carbon source, the reaction looks quite different than that.
Xylem is the answer......
Answer:
Genetic alteration probably refers to altering the DNA sequence present in the genes of chromosomes.
Explanation:
Genetic alternation occurs when the DNA of an organism gets altered due to any circumstance. Even a change in a single nucleotide can have devastating effects on the organism. It can occur due to mutations or physical factors like radiation, UV etc. Genetic alternations can be useful as well as harmful. Genetic alternation is also a source due to which variations might arise in a population and hence, it leads to biodiversity.
d) a vascular plant that uses pollen to produce seeds that are not enclosed in protective fruits
hope this helps!
