Answer:
sepals
Explanation:
sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom.
Answer:
Less stable : An ecosystem with populations that mate with only related species
Less stable : An ecosystem that has many species at every trophic level
More stable : An ecosystem with populations that mate with unrelated species
More stable : An ecosystem that has very few species at every trophic level
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Humans conduct internal fertilisation.
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Answer:
Louis Pasteur.
Explanation:
Louis Pasteur gave theory of spontaneous generation that states, life arose from non-living things. Pasteur disprove the theory of spontaneous generation by S-shaped tube experiment.
He used swan-neck shaped flasks (twisted necks) and filled the flasks with sterilized beef broth. Due to twisted neck, entry of air was allowed to the flasks from outside, but not microorganisms.
In these sterilized flasks, microorganisms could not grow as entry of airborne microbes was prevented. But if the necks of flasks were broken, growth of microorganisms entered into flasks and showed growth.
Thus, Louis Pasteur showed that microorganisms do not grow spontaneously in flasks with beef broth.
Answer:
The same
Explanation:
Half life is the time taken for the number of atoms in a radioactive sample to decrease to half of the initial number of atoms. It is also the time taken for the activity of a radioactive sample to decrease to half of its original value.
If samples A and B were obtained from the same rock, then they contain the same number of atoms having the same initial activity even though the samples were not prepared in the same way for analysis.
Hence, samples A and B have the same half life.
