Redi's experiment and Pasteur's experiments showed that life needs prior life to appear.
<h3>What is spontaneous generation?</h3>
Spontaneous generation is an erroneous old concept that believed that life appeared spontaneously without the need for preexisting life.
Redi's experiment and Pasteur's experiments showed that life needs prior life to appear by observing the requirements of closed systems (e.g., oxygen) to produce the predicted outcomes, i.e., the emergence of life.
In conclusion, Redi's experiment and Pasteur's experiments showed that life needs prior life to appear.
Learn more about Redi's experiment here:
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Answer:
Maintaining homeostasis at each level is key to maintaining the body's overall function.
Explanation:
The body maintains homeostasis for many factors in addition to temperature. For instance, the concentration of various ions in your blood must be kept steady, along with pH and and the concentration of glucose.
Answer:
Option-C
Explanation:
The oxygen revolution refers to the increasing concentration of oxygen in the atmosphere around 2.3-2.4 billion years ago.
The studies have suggested that before the oxygen revolution the Earth's atmosphere was full of the hydrogen sulfide and methane gas in which the anoxygenic prokaryotes were evolving.
The cyanobacteria and other photosynthetic bacteria evolved the photosynthetic pigments which performed the experiment and oxygen gas was produced as a by-product.
With time this oxygen got accumulated in the atmosphere and the oceans and became one of the factors of anaerobic prokaryotic, the condition which they cannot escape. Later the oxygen producing prokaryotes evolved and formed the first eukaryotes.
Thus, the selected option is the correct answer.
The second messenger camp is synthesized by the enzyme adenylyl cyclase.
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i think the answer is : A meiosis because The process of meiosis produces unique reproductive cells called gametes, which have half the number of chromosomes as the parent cell. Fertilization, the fusion of haploidgametes from two individuals, restores thediploid condition. Thus, sexually reproducing organisms alternate between haploid anddiploid stages.