Which of the following is evidence for how the composition of the atmosphere has changed on Earth over time?
a. Bands of iron found in rock layers show that the Earth's atmosphere became oxygenated by photosynthetic cyanobacteria millions of years ago.
b. Frequent volcanic eruptions have caused the Earth's atmosphere to fill with sulfur aerosols dropping the temperature globally by 5 degrees.
c. Multiple ice ages in the 18th century have caused a shift in atmospheric circulation on present day Earth.
d. Over the past 50 years, greenhouse gas concentrations have rapidly decreased in the atmosphere.
Answers (1)
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Which of the following is evidence for how the composition of the atmosphere has changed on Earth over time? a. Bands of iron found in rock ...” in 📙 Biology if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
Peer-raised macaques show neurological differences from those macaques raised by adults; they have less developed neural networks using the neurotransmitter serotonin. This is an example of a/an
Answers (1)
What is ecology in biology?
Answers (1)
How do seeds that a bird eats becomes energy that the bird uses to fly?
Answers (1)
Which planet do most known extrasolar planets most resemble? A. Pluto B. Mercury C. Mars D. Jupiter
Answers (1)
Three of theseThree of these processes normally consume oxygen. Which process produces oxygen? A) combustion Eliminate B) respiration in animals C) photosynthesis in plants D) operation of an acetylene torch processes normally consume oxygen.
Answers (2)
New Questions in Biology
Sponges are made up off
Answers (2)
The maxinmum numbers of individuals of a particular species that a partiticlar environment can support is its
Answers (1)
What is the layer of the atmosphere 20 km above Earth's surface
Answers (1)
An experiment was conducted to determine which type of fruit attracts the most fruit flies. Equal sized pieces of apple, pear, and banana were placed in separate containers at different areas around the school.
Answers (2)
In the F2 generation of Mendel's crosses, A. all plants had the dominant trait. B. half of the plants had the dominant alleleC. all plants had both the dominant and recessive alleles. D. one in four plants had two alleles for the recessive trait.
Answers (1)