Post category:Everyday Science Mcqs Post comments:0 Comments The source of oxygen in photosynthesis is _____. A. water B. salts C. minerals D. glucose Read more articles Previous PostThe gas, commonly known as “laughing gas”, is ____. Next PostThe instrument used to measure wind speed is____. You Might Also Like Which planet of the solar system spins on its axis as the fastest rate? August 28, 2020 Biopsy is done on tissues taken from__________. June 19, 2022 Radioactivity was discovered by __________. June 19, 2022 _________ is anything that takes up space and has mass. June 18, 2022 Sound waves from a loudspeaker are caused by_____. March 10, 2022 The most abundant element in the universe is ______. 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