Mutualism is a way of life in which two species that could live independently come together permanently or sporadically and each one puts something on their side for the survival of both. In nature there are many types of mutualism, for example, the spider and the toad, the narrow-billed toad is an ally of a type of tarantula that usually devours small frogs, but what, in exchange for this small amphibian to eat the parasites that affect its eggs, the arachnid allows it to live in his burrow underground and in return defends him from possible predators, like owls, throwing to them urticating hairs in their eyes.
Answer:
No
Explanation:
The earth travels in an ellipse, an ellipse is a flattened circle, and the sun is closer to one end of that ellipse and far in another end. That said the Earth is not the same distance as the sun
Air because of the density
Answer:
Option (B)
Explanation:
Chicago and Miami are both the cities in the United States, where Chicago is at a higher elevated area, whereas Miami is located in a low lying areas.
Chicago is located at an elevation of about 180 meter above the sea level, which is comparatively much higher than Miami, as Miami is at the coastal areas whose elevation is only about 2 meter above the sea level.
So, from the map it can be concluded that as Jessica travels from Chicago to Miami, it means that the elevation gradually decreases.
Thus, then correct answer is option (B).
Answer: Option D
Antigen is a given substance that stimulates a specific immune system.
Explanation:
Antigen is a substance that can stimulate an immune response by activating lymphocytes (white blood cells) which acts as body defence against infections. Antigen is divided into two which are,
1. Foreign antigen or heteroantigen which is a foreign substance that stimulates immune response.
2. Autoantigen self antigen is a substance in the body that stimulates immune response.
