PLS HELP!

Which product is missing from the Kreb's cycle?

Pyruvate + Oxygen → + 2 ATP

ATP
Oxygen
Water
Carbon dioxide

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !

Blank is a rock with a find dark texture that makes up the oceanic crust