Its a solid because it would melt
Endothermic reactions require energy
Exothermic reactions release energy
The reactants of photosynthesis would be Carbon dioxide and water.
Out of the choices given, the mechanisms that drives evolution is natural selection. The correct answer is B, natural selection.
Breakdown of carbohydrates begins in mouth with the help of enzyme salivary amylase.
Chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs. These are limited to a single typographic line of symbols, which may include subscripts and superscripts. A chemical formula is not a chemical name, and it contains no words. Although a chemical formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula. Chemical formulas can fully specify the structure of only the simplest of molecules and chemical substances, and are generally more limited in power than are chemical names and structural formulas.
