When does en element become a different element?

a. when radiation is emitted
b. only when the number of protons in the nucleus changes
c. only when the number of electrons in the outer shell changes
d. when the number of neutrons in the the nucleus decreases

2. if scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to? a. roundworms b. annelids c. mollusks d. flatworms

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them

Using meiosis, the sporophyte produces spores that are .