When we think about the effects of air pollutants we immediately think of respiratory issues. Exposure to one criteria air pollutant has harmful effects on the cardiovascular system including increased occurrence of heart attack and
stroke. These effects can result in emergency department visits, hospitalizations and, in some cases, premature death.
As expected, exposure to this pollutant is also linked to harmful respiratory effects, including asthma attacks. What is
this pollutant?

Viruses are different from bacteria in that they can remain dormant on non-living surfaces they can be found just about anywhere they can infect just about every form of life

After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.

The response is the basis for vaccination. primary secondary tertiary none of the above