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since the beginning of the industrial revolution (250 years ago), carbon dioxide concentration in the atmosphere has risen from about 280 parts per million to 408 parts per million in 2018. this means that for every million molecules in the atmosphere, 408 of them are now carbon dioxide, the highest concentration in two million years. the data below shows how global temperatures and atmosphere temperature and co2 levels. the data below shows how global temperatures and atmospheric co2 levels have changed from the year 100. use your knowledge of the carbon cycle to explain how human have affected global carbon dioxide levels and temperature levels. use the information and data provided to support your answer.


Evaluate evidence for and against the theory that an increase in the concentration of carbon dioxide in the atmosphere causes an increase in air temperature.
how many animal phylum in classification?
My question

You shall perform a demographic study of a local population of the Norwegian mountain plant Ranunculus glacialis L. to ascertain whether the population size is stable, increasing or decreasing. The study will last five years.
a) What demographic data will you collect, and how often?
b) How will you mark the individuals?
c) Determine how many stages you will divide the life cycle of this plant into, draw a life cycle graph with transitions,and put these into a transition matrix.
What is the trend (1980-2020) in the acidity levels of the Weija Lake
the biomass of decomposers was reduced from 56 gm-2 to 3 gm-2 from rainy season 1 to rainy season 2. suggest the effect this will have on the recycling of nutrients.
Literature review on the topic how do human activities impact species, communities, and ecosystem function across spatial and temporal scales.
Using this estimate, the energy of the cabbage field was calculated as 15,600 kJ m-2. Does this represent the gross or net primary production? Give a reason for your answer.
The Arctic hare ingests 18,905 kJ m-2 yr-1 of food. Its net productivity is 2345kJm-2 yr-1. Calculate the total energy loss of the arctic hare.
The net productivity of the different trophic levels in the food chain are as follows:

Grass: 13,883kJ m-2 yr-1
Arctic hare: 2345 m-2 yr-1
Arctic fox: 137 m-2 yr-1

Explain why the net productivity of the Arctic hare is less than the net primary productivity of the grass.
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