Answer:
Plants are a source of food, fuel and medicine.
Explanation:
In biology, plants are photosynthetic living beings without locomotive capacity whose cell walls are mainly composed of cellulose.
The importance of plants for humans is indisputable. Without them we could not live, since the plants participated in the composition of the gases present in the Earth's atmosphere and in the ecosystems, and are the primary source of food for heterotrophic organisms. In addition, plants have direct importance to man: as a source of food; as building materials, firewood, fuel and paper; as ornamental; as substances that worsen or improve health and therefore have medical importance; and as a consequence of the latter, as the raw material of the pharmaceutical industry.
Answer:
Option (A).
Explanation:
Facilitated diffusion may be defined as the process of movement of the particles from the region of higher concentration towards the region of lower concentration with the help of specific integral transmembrane protein.
Facilitated diffusion is a type of passive diffusion and solute particle down the concentration gradient. So this process doesn't require an ATP or any other energy source.
Thus, the mismatched pair is option (A).
Answer:
The presence of ozone enabled organisms to develop and live on the land. Ozone played a significant role in the evolution of life on Earth, and allows life as we presently know it to exist. These atoms combined with remaining oxygen (O2) to form ozone (O3) molecules, which are very effective at absorbing UV rays which could be injurious to organism existence
Explanation:
I believe it’s C because the heart pumps blood through the body
Answer:
I think that the second picture was correct
Explanation:
gravitational field is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body. Thus, a gravitational field is used to explain gravitational phenomena, and is measured in newtons per kilogram (N/kg)