Answer:
Common descent is a theory that states that all organisms are descendants of a single common ancestor.
Explanation:
Common Descent:
- By definition, common descent signifies the common ancestry of a group of organisms.
- Common descent is an approach to explain the similarities between different organisms.
- The theory of common descent states that all organisms have descended from one common ancestor and therefore, possess some degree of similarity.
- Common descent has helped explain the genetic and structural similarities between two entirely different organisms such as reptiles and birds.
- For example, pentadactyl limbs i.e. limb with five fingers or digits is a highly conserved characteristics of all tetrapods. This indicates common descent with modification.
Answer:
fertilizers
Explanation:
Plants use nitrates as a supply of nitrogen, which is needed to make proteins for healthy growth. Plants absorb nitrates in water through their roots. Nitrates are present in high levels in plant fertilisers. Without nitrates, the amount of chlorophyll in leaves reduces.
<span>A. Amylase catalyzes the reaction; glucose is the product.
</span>Amylase<span> is an enzyme that </span>catalyses<span> the hydrolysis of starch into sugars.It is </span><span>present in the saliva of humans through which it begins the chemical process of digestion.</span><span>
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A thermoacidophile are the organisms which are adapted to survive at high temperatures and acidic pH. Thermoacidophiles generally prefer the temperature range of about 70 - 80
o
C and pH between 2 and 3. They are found in the hot springs and thermal vents.
