Which of the following must be true to consider something to be alive? A. it must be able to replicate its DNA b. it must be able to response to light c. it must be able to covert energy from one form to another d. it must be to move

Clownfish are well adapted to living in coral reefs. Which feature of clownfish shows this? its immunity to the poisonous anemones that live on coral its bright colors, like many of the coral reef fish species the ability to survive in great depths

What chemical gets released at the end of a neuron to transmit an impulse to the next neuron?

As a result of Earth Day, what do you think is a major change that has occurred in the world?

The elimination of a predator has no negative impacts on that predator's prey species. a. True b. False

What happens during the monsoon season?

The role of a watershed is to ... a) purify water b) act as a drainage area c) collect fish from rivers and streams d) protect wetland areas

How would relaxing the smooth muscles in arteries affect blood pressure?

Is concentration of astmospheric carbon dioxide decreasing do to human activity

Why do viruses need living hosts, such as bacteria or eukaryote cells? (SB4c) A) The host cell is the source of food for the virus. B) Viruses depend on the host cells that they infect to reproduce.

The lac operon in E. coli controls the gene expression of the enzymes that digest lactose in the cell. In the absence of lactose, the lac operon will turn off and gene expression will be inactivated.