A graph of atmospheric carbon dioxide concentration over time is shown below. Scientists are investigating the cause of the large increase in atmospheric carbon dioxide concentration since about 1800. Which of the following provides the best explanation for the increase? -eruptions of large volcanoes
-use of fossil fuels by human
- natural fluctuations of climate
-photosynthesis by phytoplankton

the answer is B the use of fossil fuels by humans have a great day!

Explanation:

we would need to see the picture to answer it

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a