The smallest type of stream is a brook.
Answer:
See the answer below
Explanation:
<em>Obligate anaerobes are microbes that can only survive in oxygen-deficient environments. They are killed by the normal atmospheric level of oxygen and will only thrive in environments whose oxygen levels are lower than that of normal atmospheric level. </em>
Obligate bacteria such as <em>Clostridium botulinum </em>obtain their energy through <u>anaerobic respiration processes such as fermentation and anaerobic respiration.</u> During this process of fermentation, the lactic acid pathway is mostly used but other fermentation pathways such as propionic acid, mixed acid, acetogenesis, and methanogenesis pathways can be used.
What is the question it does not make sense I will answer in comments if u explain
Internet Answer:
"In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species are related and gradually change over time."
Explanation:
Scientists don't believe so much in Natural selection anymore, but they do believe that evolution takes place over a very long time. The species would evolve because of a need a may have. Giraffes did not have long necks, but over time they evolved to reach the leaves. Same with some finches. Some grew sharper beaks for bigger seeds. Other stayed the same, sin ce they did not need it.
ANSWER:
Evolution is a series of changes in an organism that takes place over many many years.
