The walls of veins have the same three layers as the arteries. Although all the layers are present, there is less smooth muscle and connective tissue. This makes the walls of veins thinner than those of arteries, which is related to the fact that blood in the veins has less pressure than in the arteries. Hope this helps. Have a nice day.
Answer:
In Drosophila, successful mating is frequently dependent upon an elaborate courtship "dance" performed by the male. Over 200 species of these fruit flies occur on the Hawaiian Islands. However, mating between many of these species is avoided, as the females only respond to the particular "dance" of conspecific males. This is an example of:
sexual selection
Explanation:
The sexual selection in this case of the flies, causes that the males by means of the dance are echoed to copulate by the female, the conspecific males have evolved with this form of selection that prevents the coupling of the female with other species and which allows the conspecific males to ensure their paternity.
Answer:
Conduction of water and minerals between the roots and leaves
Explanation:
- EIjiro
you have to do the splits and I don’t know how to you make sure I don’t have to
Human health can be affected by the changes in air quality because, in china they have one day a year where no one is allowed to drive or use equipment or else they will be arrested, and according to number lines of peoples health that live in china people are much more healthy and their body has a better immune system because it doesn't have to fight the bad toxins that are going into their bodies. and so our immune system can be affected, we can get different diseases and many other things all because we pollute this beautiful earth.
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