Which of the following are an example of stimuli? Check all that apply. The strong smell of a women’s perfume
The sour taste of a lemon
Pinching your skin
Dimming the lights in a room
Having your back massaged

According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

The transport tubes from food came down the plant are called?