Which of the follow statements about isotopes is NOT correct? A- Isotopes are the same element but with different masses
B- Isotopes are often used for dating artifacts and fossils
C- Isotopes have different numbers of electrons
D- Isotopes are often radioactive

Most metamorphosis processes take place

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.

What type of chemical reaction occurs between silver nitrate (agno3) and copper (cu)? the equation i was given is 2agno3 + cu —> 2ag+ cu(no3)2.