Fossil fuels. There aren't many other notable resources that are the same. Mainly consistsof carbon, oil, and natural gas.
Answer: Adaptations to environment are the means used by an organism to obtain food and energy in its particular habitat. Living things adapt themselves not only to their physical environment but also to their living environment, that is, they must adapt themselves to other plants and animals living around them.
Explanation:
Simply survival of the fittest. That means that if the mutation works in its favor it will survive long enough to reproduce and the others that dont have the mutation will die.
Hope this helps.
Answer:
Troposphere, stratosphere, mesosphere, thermosphere
this is the layers from space into earth
<u>Answer</u>: <em>Option 2</em> foreign antigens
<u>Explanation</u>:
<em>Antigens</em> are proteins that are found on the surface of a pathogen and <em>white blood cells </em>(leukocytes) are the cells of the immune system which helps fight infection and protect the body from foreign antigens.
Whenever a foreign antigen enters the body, a type of white blood cell called as the lymphocyte recognizes it and then produces antibodies against it, to generate an immune response.
So, <em>an immune response is primarily due to white blood cells recognizing foreign antigens.</em>