In contrast, how do amniotic eggs reveal how reptile reproduction has evolved for life on land?

Is this a scientific model? use complete sentences to explain why or why not. a graphic organizer showing the water cycle

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.