Answer:
d. water is easier to move over the respiratory surface
Explanation:
The concentration of O2 in water is approximately 40 times less than air (4-8mL per liter), this fact in addition to water's greater density and viscosity in comparison with air, means a more demanding process in general. To adapt and reduce these disadvantages aquatic animals developed grills, creating foldings with a larger surface area for gas exchange.<em> The main advantage for gas exchange in water is that the respiratory medium remains moist at all times. </em>
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Answer:
introduction of new predators to the insects.
<span>Hemophilia A is an X-linked recessive disease caused by a lack of a coagulant, or blood clotting agent, called factor VIII (factor 8). This is caused by a mutation in a gene on the X chromosome called F8. If a father is affected, his daughters will be carriers of hemophilia A and his sons will be unaffected. If a mother is an unaffected carrier, each daughter has a 1 in 2 chance (i.e., 50%) of being an unaffected carrier and each son has a 1 in 2 chance (i.e., 50%) of being affected with hemophilia A.</span>
Answer:
Physical changes occur when the atoms and molecules in the matter of the object changes physically.
Explanation:
Physical changes occur when the atoms and molecules in the matter of the object changes physically.
Answer:
Organic compounds contain carbon atoms bonded to other atoms.
Explanation:
The organic compounds have as a fundamental element carbon, an element which is tetravalent because it has four covalent bonds. Carbon can form chains of variable length, thanks to that. You can also find hydrogen in those chains that's why we can say that the organic compounds are formed by hydrocarbon chains (carbon and hydrogen)