Which organisms do botanists think may have helped early land plants obtain nutrients from Earth's rocky surface?
a. earthworms
c. bacteria
b. viruses
d. fungi

Which of the following graphs have the same wavelengths

When ash and dust begin to settle on the ground, they eventually become compacted by

Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate k-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth