Answer:
Due to exchange of gases i.e. normal and abnormal.
Explanation:
The main difference between incomplete and complete ventilation is the occurrence of normal and abnormal exchange of gases. The mechanism in which the exchange of gas happens completely without any difficulty is called complete ventilation. It is the process in which the required amount of oxygen is inhaled or inspired and appropriate amount of carbon dioxide is exhaled out of the body while on the other hand, incomplete ventilation is a mechanism in which exchange of gases is not normal.
Answer:
Birds have a different mating season this evidence will go against the argument and suggest that the birds are actually different species. Generally, two factors seasonal and behavioral identifies the differences among the species. Species generally interbred among the same population of species according to the season and hence they loose mating opportunities. Although being sexually compatible they do not interbreed. Behaviorally, a biological clock in species naturally sets breeding cycle according to the resources availability, suitable nesting sites and mating opportunities. Different species have different seasonal requirements to accomplish this.
The discoverers of DNA were not
James D Watson and Francis Crick. They are the first scientist to formulate an
accurate description of the DNA’s (deoxyribonucleic acid) complex ,
double-helical structure. They discovered that base pairing nucleotides must
be; adenine and thymine; and cytosine and guanine. These base pairs are held
together by a hydrogen bond, atype of chemical reaction that s easy to break
and easy to reform. The statement is “DNA
is a double helix made of two strands linked together with hydrogen
bonds.”
The answer is natural selection
Conjugation, transduction, & transformation are three separate natural methods of genetic transmission between bacterial cells.
<h3>Write about a cell.</h3>
The most basic form capable of supporting life and compensating all other living entities, including tissues in the body. The three main parts of a cell are the cellular walls, the nucleus, and the cytoplasm. The cellular membranes, which encloses the cell, controls the chemicals that enter and exit the cell.
<h3>What is a cell used for?</h3>
They provide the body with structure, take in nutrients from food, convert those into energy, and carry out certain functions. Cells also contain the genetic material of the organism and are capable of self-replication.
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