In an effort to reduce the number of deaths due to Malaria , Scientist have successfully introduce a gene into mosquitoes. The gene makes the mosquito unable to support the development of the parasite that causes malaria. The technique used to produce this new variety of mosquito is most likely

A. Chromatography
b. Genetic engineering
C. Electrophoresis of genes
D. Selective breeding

Which of these best describes an ionic bond?

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!