Astudent designs an electromagnet, as shown in the picture. the electromagnet is only able to pick up 1 paper clip. list 2 modifications he could make to his electromagnet in order to enable it to pick up more paper clips.

The answer is;  

Increase the number of coils around the nailIncrease the current on the wire coils.

The nail becomes magnetic through a phenomenon called ferromagnetism. The electric field around the coils, as the current passes, cause an alignment of electrons on the nail and cause it to have magnetic properties. Iron, nickel, and cobalt are highly ferromagnetic materials.

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

If you eat to much it could kill you.