Which of the following levels of organization within the biosphere is characterized by only biotic factors?

A.

biosphere

B.

ecosystem

C.

biome

D.

population

Javier has found a beetle during a field study. He suspects that it might be a new species of beetle that no one has ever documented before. He takes the beetle back to his lab and examines it under a microscope.

How does high biodiversity affect an ecosystem apex?

The group of macromolecules that serves as the main source of energy for living things is

Explain with examples the working of antagonistic muscles in short.

Which of the following is an invertebrate

Animal cells are permeable to water and urea but NOT to sucrose. The inside of a cell contains 1 M sucrose and 1 M urea and the outside 1 M sucrose and 2 M urea. After the system reaches equilibrium, what changes are observed?

How has human activity impacted the evolution of the peppered moth?

Which feature of sugarcanes suggests that they are stems? The presence of scaly leaves and axillary buds A high quantity of sugar The development of adventitious roots

How was the wildlife affected by hurricane sandy in 2012

What is the difference between a leading and lagging strand?