During in vitro fertilization, multiple eggs are extracted and fertilized. The resulting embryos may be screened for their likelihood of a successful pregnancy. The screening can include a method called the preimplantation genetic diagnosis, in which embryos are examined for specific genetic diseases. For example, cystic fibrosis, hemophilia, or chromosome abnormalities are commonly screened against. Once screening is complete, several embryos are selected and implanted into a uterus. What ethical argument supports the use of the embryo screening process?

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Photosynthesis converts solar energy into what type of energy?

One function of the immune system is to attack the foreign cells to protect the body. in organ translate , the body recongnizes that the new organ is made of foreign cells. wha kind of medicine would you give a patient to increase the chances of transplate success