On a microscopic view of a leaf, bryan saw some bean-shaped cells present in pairs. which cells were observed by bryan?
palisade
guard cells
spongy mesophyll

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

Which type of respiration takes place when there is no oxygen present

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?