Why is succession slower on sand or bare rock than on previously vegetated soil exposed by a fire?

Which two molecules are found in DNA but not RNA? a. cytosine, phosphate b. deoxyribose, ribose c. thymine, deoxyribose d. uracil, deoxyribose e. deoxyribose, adenine

Filtration is a non-selective, passive process in which water solutes are forced through a membrane by hydrostatic pressure. The following property limits movement of some solute. size of membrane pores (T/F)

Which biogeochemical cycle is least dependent on biotic process? A) carbon B) oxygen C) phosphorus D) water

Juan and his friend Sam have been painting Juan's bedroom and they have created a great mural on one wall. In order to this, the boys have a collection of paints, solvents, brush cleaners as well as rags used for clean up.

What is 150,000,000 km in scientific notation?

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.