What type of fish went extinct during the cretaceous period?

teleost

ichthyosaurs

both a and b

none of the above

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.