Answer:
A! (this question was already on brainly so when i looked it up to get you the answer i found it and it said A and they they got the question right)
Explanation:
Answer:
The greenhouse effect is often caused by the atmospheric accumulation of gases. Those gases tend to be Carbon Dioxide and/or Methane
Explanation:
The greenhouse effect is caused by these gases because Carbon Dioxide and Methane absorb some of the heat that radiates off of Earth's surface, trapping the heat and then the greenhouse gases absorb the heat and it leads to a rise in its temperature
I think because of gold strike
Answer:
option 2: material created after the period of time in an event occurred
Explanation:
first we need to know what primary source is
a primary source may be someone or something with a direct knowledge of the event or situation.this is the most reliable sourceof information about an event or situation obtained directely from the event
secondary source is obtained from the primary source hence being obtained after the period of time an event occured.it is information derived from the primary source