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Answer:</h2>
The organisms is <u>D. Methanogens
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Explanation:</h2>
Prokaryotes are the organism which is made up of a cell that does not contain a membrane enclosed nucleus. They have a structure called as nucleiod which looks like a thread in appearance. The eukaryotes are the organism which has membrane bound nucleus.
Among the given list of organism in the options, Methanogens are microorganisms that produce methane as a metabolic result in hypoxic conditions. They are prokaryotic and have a place with the space of archaea.
Apart from this, amoeba, grass and cockroach have membrane bound nucleus.
Answer:
d is the correct answer
Explanation:
an ionic bond forms when positively charged metal ion attract to negatively charged ones
hope this helps !
Answer:
Due to increasing the survival.
Explanation:
The natural selection causes a change in allele frequency leading to a change in the color of the frogs because the colour of the frog helps it in hiding from predators. The population of that frog specie increases which has the ability to hide from the predators in that environment while on the other hand, the population of frog decreases which can easily be seen by the predator due to its colour so this change in allele frequency will leads to natural selection.
Mechanical is. the digestion that occurs
