What would happen to an ecosystem if all the organisms that breakdown dead plant and animal matter suddenly disappeared?

Which of the following statements regarding the genetic material of cells and viruses is true? A. The genes of both viruses and cells are enclosed within a nucleus. B.

The ocean is an example of? A: Habitat B: Ecosystem C: Population D: Community

Which of the following is a node that you would expect to find on the cladogram for animals? A - fur texture B - deuterostome development C - feather arrangement D - leg length

If scientists are wrong about Earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

During the replication of a dna molecule, separation or "unzipping" of the dna molecule will normally occur when hydrogen bonds are broken between what two nucleobases?

wall of the gut tube has layer of smooth muscle that run both circulary and longitudinally contraction of these muscles produces

Many toxins and poisons block certain enzymes in the mitochondria. For example, many fruits, including apricots, apples, plums, peaches, and cherries, contain seeds and pits that can cause the formation and release of the poison cyanide if they are

In a classroom system, the students produce an output of information on tests and homework. This information becomes an input for the grading part of the system. Which statement about the output of the students is true? A.

In two or more complete sentences describe how a dam placed in a river can act as both a constructive and destructive force.

When enough experimental data support a hypothesis, the hypothesis becomes a what