Is a tree biotic or abiotic

There are some greenhouse gases that are found naturally in the atmosphere such as carbon dioxide, methane, and water vapor. There are also greenhouse gases that are not found naturally; they are released from anthropogenic sources only.

How has technology affected communication?

Susanna uses a rope to lower a bucket in order to get water from a well near her house. Which force allows the bucket to be lowered? F. electrical G. friction H. gravity I. magnetism

What kingdoms include organisms that are autotrophic or heterotrophics

Which of the following is not part of a chromosome? A. A strand of DNA B. A gene C. Many proteins D. Many strands of RNA

When in england, darwin displayed a wide variety of physical symptoms. these symptoms were probably ___?

The female reproductive system in humans differs from the human male reproductive system in that it is solely responsible for

How are sedimentary rocks layers deposited

A cell contains a 30% solute concentration and 70% water concentration. If the cell is placed in a solution that is 60% solute and 40% water, what will happen to the cell, and what condition is the cell in?

During upwelling, nutrient-rich water rises to the surface. How would this most likely affect the biotic components of the ecosystems where the upwelling is taking place?