Im Confused lol i cant cap
Answer:
The atmospheric carbon dioxide concentration has risen from about 270 parts per million (ppm) before 1700 to about 355 ppm today. Climate changes, including a mean global surface temperature rise of between 2.8 and 5.2°C, have been predicted by five independent general circulation models (GCMs) for a doubling of the carbon dioxide concentration. The objectives of this paper are to examine plant responses to rising carbon dioxide levels and climatic changes and to interpret the consequences of these changes on crop water use and water resources for the United States.
Explanation:
The correct answer is option C
All the animals are Heterotrophs as they cannot perform photosynthesis.
Except some of the sponges, all the animals are heterotrophs as they cannot make their own food(photosynthesis).
Heterotrophs depends on autotrophs or some other organisms for their food.
They are dependent on other organisms for their energy needs.
Answer:
20.8
Explanation:
I took it and it was right