Answer:
The annual average CO2 concentration for 2021 could be around 416.3ppm, according to Meteorological Office estimates. An annual rise of about 2.5 ppm is possible, which can potentially make 2021 the first year with the annual average CO2 at 50 per cent above pre-industrial levels, the estimates noted
By the number of rings inside the trunk
Answer: Interphase; Prophase; Metaphase; Anaphase; Telophase
Explanation:
1) The genetic material is duplicated (Interphase)
2) Chromosomes become visible the spindle apparatus forms (Prophase)
3) The chromosomes line up in the middle of the cell. (Metaphase)
4) The cell plate forms; the nuclear envelope is formed. (Anaphase)
5) Chromosomes move to opposite ends of the cell (Telophase)
Answer:
Two classes of pure substances are elements and compounds
Sometimes, I think it's just how it reacts to the air but if it was crazy bubbles I'd be skeptical I'm a pretty paranoid person though...