Plastic particles in the sea can cause problems to aquatic life ranging from plankton, fish to big animals like turtles, dolphins and whales. The problem of aquatic life is not only the direct intake of plastics but also the chemicals in the plastics that can be absorbed into the tissues of these aquatic life.
3. Apart from the problem above, surf the Internet to find information about the problems of using ionic compounds and covalent compounds in the following fields
(a) Industry
(b) Agriculture
(c) Medicine
(d) Domestic

I think the answer it's can be A industry

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.