Answer:
True.
Explanation:
Red blood cells or erythrocytes carry oxygen to the cells of the body so that they can have energy and function properly. This is not the only function of red blood cells. Also, they carry dioxide, which is a waste product that needs to be out of our body. Erythrocytes carry the dioxide to the lungs, specifically to the alveoli. In the alveoli due to the inhalation, oxygen enters our body traveling up to the lungs, specifically to the alveoli, where thanks to the thin wall of it as well as the one on the capillaries that are in contact with it, the dioxide enters the lungs to be expelled in the exhalation, and the oxygen is taken by the red blood cells to be used in the cellular respiration and generate energy to keep the vital functions of our body.
Explanation:
Biologists have discovered that the reason behind the decline of fireflies is habitat loss, light pollution and excessive light; excessive light can disrupt the insects mating ritual.
Answer:
You need to use the scientific method and <u><em>knowledge of the environment </em></u>in order to work as an environmental scientist.
Explanation:
An environmental scientist should have an excellent knowledge about the systems of the environments and scientific methods. If a scientist is thorough about his understandings of the environment, he will be able to recognize any changes in the environment immediately and formulate the necessary reasons for the changes by using the scientific method of research. By using the scientific method of research, a scientist is able to learn about the various phenomenon occurring in the environment.
Answer:
They absorb the food molecules that result from the external digestion.
Explanation:
They are <span>called </span><span>pathogens.</span>
