Answer: Option A) Oxygen may not have been able to accumulate in the atmosphere
Explanation:
Ozone, O3, is an allotrope of oxygen having three atoms in the molecule instead of the usual two present in molecular oxygen. Ozone is generated from oxygen, and is the only form in which oxygen can exist in the atmosphere.
Experts are rarely able to distinguish between two people handwriting. This is FALSE. Reason here is that a person can identify for two different people.
2. There are often no specific tests that can be used to definitely prove that something has been forged. This is TRUE. there is no specific prove that something has forged.
3. Documents examiners have have an easy time in obtaining exemplars because most people volunteer them. This is FALSE because there is no easy way to obtain exemplars of documents.
4. All typewriters and related devices will have variations in the type over time as the typewriter experiences wear and tear to its parts. This is TRUE because typewriters and other devices will not have variations of tear and wear to its parts.
Answer:
Chemical families on the periodic table are the following:
1) Alkali metals.
2) Alkaline earth metals.
3) Transition metals.
4) Halogens.
5) Noble gases
Explanation:
Alkali metals are those elements having one electron in the outermost shell. Alkaline earth metals are found in the earth such as calcium. Halogens means salt forming, it produces salts when combine with alkali. Noble gases are those which are non-reactive in nature.
Answer:
Reviewing other studies is what you should do.
Answer: I wish I could answer I speak English
Explanation: free points! Thank you
