Hard, dense bone tissue that is beneath the outer membrane of bone <span />
Correct answer: D) From bacteria living in their roots
Nitrogen is an essential plant nutrients, but it is metabolically unavailable to higher plants and animals. It is available to some species of microorganism by biological nitrogen fixation in which nitrogen is converted to ammonia with the help of enzyme dinitrogenase.
The process of breaking apart the two atoms in a nitrogen molecule is called nitrogen fixation. Plant obtain the nitrogen they need from the soil which is already fixed by the bacteria and archae.
Example: <em>Azobacter</em><em>,</em> Nostac
Answer:
The correct answer is - option A.
Explanation:
Humans posses various characteristics or trait that combined together or as in whole separates them from other organisms. These traits are include various traits that are :
large brain and cranial capacity to body mass, opposable thumbs, and bipedalism which means using two feet for walking only and others, there are several other characteristic like thermoregulation and other.
Thus, the correct answer is - option A.