The rock record indicates that photosynthesis began on Earth about 3.5 million years ago. a. True
b. False
Answers
Answer;
The above statement is false
Explanation;
Photosynthesis is the biological conversion of light or electromagnetic energy from the Sun into chemical energy. It occurs in green plants, algae, and some types of bacteria, and requires a series of biochemical reactions.
In photosynthesis, carbon dioxide and water react with one another in the presence of light and a chemical known as chlorophyll to produce a simple carbohydrate and oxygen.
Fossils of what are thought to be filamentous photosynthetic organisms have been dated at 3.4 billion years old. Geological evidence suggests that oxygenic photosynthesis, such as that in cyanobacteria, became important during the Paleoproterozoic era around 2 billion years ago.
I put true into the answer and it was wrong so it is actually FALSE.
The answer above is incorrect.
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A chemist who is performing this reaction starts with 160.1 g of NH4NO3. The molar mass of NH4NO3 is 80.03 g/mol; the molar mass of water (H2O) is 18.01 g/mol. What mass, in grams, of H2O is produced?
1. Radioactive decay of 40K atoms in an igneous rock has resulted in a ratio of 25 percent 40K atoms to 75 percent 40Ar and 40Ca atoms. How many years old is this rock?
Answers
Answer:Hello,
Neon is a noble gas. It is located Group 18 and the oxidation number is 10.
I hoped it helped have a nice day!
Answers
The correct answer for above statement is:
True
Explanation:
Prices don’t show the total cost of reconstruction fuels to each of us personally or to the community as a whole. Remembered as externalities, the unknown costs of fossil fuels aren’t described in their business price, notwithstanding severe consequences on our health and environment.
Concerns over a global dependence on fossil fuels include environmental, economic, and social consequences.
The statement about “Concerns over a global dependence on fossil fuels include environmental, economic, and social consequences” is true. The environmental, economic, and social consequences greatly affects the global dependence.
Answers
Answers
B) element, molecule, compound, mixture is the answer just took the test ;) good luck : P
three magnets of different sizes (one small, one medium, and one large) and holds them over
a container of paperclips to see how many are attracted. Her results are shown in the table
below.
What should Alexis do next after examining her experimental results?
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Answer:
Alexis should conduct more trials to see if there is a correlation between magnet size and magnetic properties.
Explanation:
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d=84.7 g /49.6 cm^3
d= 1.71 g/cm^3