The correct answer is: evolution of photosynthesis evolution of photosynthesis, first eukaryotic cells, first animals, Cambrian explosion, first land plants
Evolution of photosynthesis most likely occurred 3.5 billion years ago, and Bacteria (prokaryotic cell) were the first organism that developed primitive forms of photosynthesis (without releasing oxygen). After photosynthesizing cyanobacteria evolved and started producing oxygen, eukaryotic cells appeared (2.7 billion years ago).
575 million years ago the first simple forms of animals (multicellular) such as Ediacara biota.
541 million years ago in Cambrian era, Cambrian explosion occurred. Almost all present animals appeared during this event.
The first land plants appeared around 470 million years ago.
Answer:
Acid deposition represents the mix of air pollutants that deposit from the atmosphere leading to acidification of soils and freshwaters. ... Rainfall that is acidic, possesses elevated H+ ion concentrations, and has been commonly known as 'acid rain'.
B because the burning of fossil fuels release greenhouse gasses
A directional movement of water is ocean currents