The IPCC Fifth Assessment Report concludes A) humans are ...

[EAugust]

The IPCC Fifth Assessment Report concludes
 
  A) humans are likely (99 certainty) responsible for the climate changes since 1950.
  B) no consensus on recent climate trends exists; some maintain it is mostly human-caused, others maintain it is natural fluctuations.
  C) that while climate change is occurring, it is largely natural climate fluctuations.
  D) it is highly doubtful that recent climate trends represent anything more than a temporary perturbation in the long term climate signal.
  E) general circulation models (GCMs) have too much uncertainty to use them in assessing anthropogenic and natural climate change.

Question 2

Together, these three natural elements make up 99 of the Earth's biomass.
 
  A) hydrogen (H), oxygen (O), and carbon (C)
  B) hydrogen (H), helium (He), and oxygen
  C) oxygen (O), argon (Ar), and helium (He)
  D) hydrogen (H), nitrogen (N), and helium (He)
  E) carbon (C), nitrogen, and helium (He)

[fur]

Answer to Question 1

A

Answer to Question 2

A

[EAugust]

Thanks for the timely response, appreciate it

[jojobee318]

Gracias!