Which of the following describes a heterogeneous mixture? A
carbon monoxide, a toxic gas with the chemical formula CO
B
simple syrup, a substance that has two parts sugar to every one part of water
throughout
с
beach sand, a substance that can contain rocks, shells, metals and other
substances distributed unevenly throughout
D
sulfur, a substance with atomic number 16 and the symbol S on the periodic
table.

Which of the following is true of photosynthesis? a)carbon dioxide is a reactant b)water is a product c)most reactions within this process are exothermic d)oxygen is a reactant

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.