Answer:
The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.
A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula.
Answer: The correct answer is the fee-based tests provide information on herbal products' identity, potency, dissolution, purity, and labeling accuracy. The four organizations that award a seal of approval are the USP, Consumer Lab, National Products Association, and NSF International.
Explanation:
Answer:
No
Explanation:
I picked "No" because, the population doesn't stay the same all the time.