Agene for disease resistance in fir trees is transferred to pine trees using modern dna technology. how might this be economically to tree farmers? a) abnormal pine tree growth would be eliminated. b) erosion of topsoil would no longer be a concern. c) pine trees would be safe from pine beetle attacks. d) more pine trees would live to maturity, increasing lumber output.

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

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.

What effect might melting sea ice have for people who live in coastal areas?