Post category:Everyday Science Mcqs Post comments:0 Comments About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is_____. A. Oxygen B. Cabon Dioxide C. Silicn D. Clay Read more articles Previous PostAcid rain is mainly caused by emissions of _____ in the atmosphere. Next PostThe fourth state of matter is____. You Might Also Like Who invented Logarithm Tables? June 19, 2022 The human blood is divided into__________ groups? June 18, 2022 X-rays were discovered by: May 24, 2021 The SI unit of “pressure” is _____. March 9, 2022 Sunken stomata are found in which of the following? November 25, 2020 According to Big Bang Theory, the Universe began about _____ billion years ago. March 9, 2022 Leave a Reply Cancel replyCommentEnter your name or username to comment Enter your email address to comment Enter your website URL (optional) Save my name, email, and website in this browser for the next time I comment. Δ