rjgarrett78
rjgarrett78 rjgarrett78
  • 21-01-2021
  • Biology
contestada

how have co2 levels changed since 1870

Respuesta :

puckingunicorns22
puckingunicorns22 puckingunicorns22
  • 21-01-2021

Answer:

raised atmospheric concentrations of CO2 by 47% above pre-industrial levels

Explanation:

Over the past 170 years, human activities have raised atmospheric concentrations of CO2 by 47% above pre-industrial levels found in 1850. This is more than what had happened naturally over a 20,000 year period (from the Last Glacial Maximum to 1850, from 185 ppm to 280 ppm).

Answer Link

Otras preguntas

Can you please help me with this and thank you
who was the leader of the mexican army? of the Texans?
Plz plz help me plz help me plz I’m begging you plz plz help plz plz help me plz help me
#2 ) In the alchemist. What is Santiago‘s job in part 1 A) Gypsy B) Priest C) Shepard D) alchemist #3 Santiago‘s first dream is to travel, which he accomp
Hace mucho tiempo que no visito a (visit) los padres de mi padre, es decir, a mis (1) paternos. Ellos viven con un hermano y una (2) de mi padre, mi (3) Alberto
please help with this!!
23 red marbles is 40% of _ marbles
hey, so I'm doing a 500-word essay, here's the question:" What was it like to be an African American during the Jim Crow era? How were African American people t
How did the Cuban Missile Crisis change President Kennedy’s view of foreign policy? A. He no longer believed peace with the Soviet Union was possible. B. His fo
ASAP ANYONE PLEASE tell me if I’m right !