Which of the following is an example of a parasite? a. A flea that bites an animal and sucks its blood to survive.

b. An orchid flower that sits on a tree branch

c. The bacteria that live in human intestines and help humans digest things.

d. An Egyptian plover that cleans a crocodile's teeth.

hmm helpo?

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate,m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2