One way in which elements differ from each other is the structure of the electron cloud in each element’s atoms. In an electron cloud, an electron that is farther away from the nucleus has a greater charge than an electron near the nucleus.
a smaller charge than an electron near the nucleus
higher energy than an electron near the nucleus.
a lower energy than an electron near the nucleus.

What two fields of study provide the core information that is used to classify organisms?

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.