W33d is the answer duh as always
Must be talc because it is one of the softest minerals
Answer:
Some versions have more steps, while others may have only a few. However, they all begin with the identification of a problem or a question to be answered based on observations of the world around us.
Explanation:
please give brainliest
Answer:
Repetition
the act of repeating, or doing, saying, or writing something again; repeated action, performance, production, or presentation. repeated utterance; reiteration. something made by or resulting from repeating.
Replication
duplicate, repeat replicate a statistical experiment replicated his mentor's writing style. intransitive verb.
Empirical evidence is the information received by means of the senses, particularly by observation and documentation of patterns and behavior through experimentation. The term comes from the Greek word for experience,
I hope it helps
<u>Answer:</u>
Cyanobacteria start producing pure oxygen around 200 million years ago.
<u>Explanation:</u>
Many scientists believed that Earth did not have any oxygen. Cyanobacteria or the blue green algae are the microbes which produced oxygen for the first time with the help of photosynthesis. This was around 4.5 billion years ago: after Hadean eon.
They were very simple, but they produced oxygen in the early earth’s atmosphere. So, they brought evolution on earth. This “blue-green algae” exists in salt water, rocks and soils and play a major role in maintaining the ecosystem.
