Answer:
Ocean acidification: Ocean acidification refers to the decrease in the pH of ocean water.
The pH of ocean water decreases due to the increased in the carbondioxode emissions in the atmosphere because of the burning of fuels. This carbondioxode is dissolved in the ocean water and forms carbonic acid. This carbonic acid is responsible for increasing the pH of ocean water. In one and half century, there is 30% increase occurs in the acidity of ocean water.
No they do not have defined nucleus
Competition is an interaction between organisms or species in which both the organisms or species are harmed. Limited supply of at least one resource (such as food, water, and territory) used by both can be a factor.
From DNA to RNA, purines and pirimidines transform in this matter:
(A) adenine => (U) uracile ; because RNA has uracile instead of timine in DNA
(G) guanine => (C) citosine
mRNA: G U G C A C C U G A C U C C U G A G G A G
GUG-valine
CAC-histidine
CUG-leucine
ACU-threonine
CCU-proline
GAG-glutamic acid
GAG-glutamic acid
Hope this helps!
Ameoba has the similar mode of nutrition.
Phygocytosis can be
defined as the process where phagocytes or living cells engulf or ingest other
cells or particles. Thus, phagocytes can be of the body cells such as white blood
cell or free living sinlge cell organism such as ameoba. Ameoba uses the process
of phagocytosis to eat and acquire nutrients with the use of pseudopods to
engulf the particles.