Which of the following involves only biotic factors?

A. a pine tree absorbing light from the Sun

B. a spider building a web in the corner of a building

C. a duck catching and eating a snail

D. an otter using a stone to break open a sea urchin

What type of passive transport specifically includes water traveling through a selectively permeable fembrane?

Where does stress build up and eventually release within a fault?

What did Arthur Jensen conclude about intelligence based on his research?

What is the relationship between the pH of pond water and the survival rate of animal species living in the pond? A) The is no relationship between pH and surviving species. B) As the pH decreases, the number of surviving species decreases.

A plant can have green (G) or yellow (g) leaves. It can also have a long (K) or short (k) stem. A scientist is preparing a Punnett Square for a dihybrid cross of a plant with genotype GGkk. What possible gametes can the plant produce?

How do you calculate how much energy is transferred from one trophies level to the next

How does seafloor spreading move plates?

In what ways do humans use diatoms?

How long can a praying mantis live without its head?

All known species can be grouped into three domains. what are they?