When you get a bruise, capillaries the smallest blood vessels get busted and release blood which will be trapped beneath the skin as a result of the trauma or impact which may be a blow or a cut
Microtubules are macromolecules that build both, cilia and flagella.
<span>Microtubules are cytoskeletal fibres that are formed by polymerization of α,β-tubulin and they are important components of cilia, flagella and some other cellular structures. Cilia and flagella are very similar in their organization, both have a central bundle of microtubules-axoneme. Axoneme is compound of nine outer doublet microtubules which surround a central pair of singlet microtubules. Even thought cilia and flagella are structurally similar, they are differentiated based on their function and/or length. Flagella are longer and the primary role of the flagella is locomotion. On the other hand, shorten cilia often has the function in sensing the extracellular environment.</span>
She discovered that folate was crucial to sperm development. <span>It has been found that folate may have been the driving force behind the evolution of darker skin, factors such as clothing and climate affect the evolution of skin pigment. </span>
Answer:
While looking for food and places to sleep, migrant birds might have more trouble
identifying windows and fly into them more often . However, it could also be that
there are simply more window collisions in the fall because there are more birds in
the area when migrant and resident birds co-occur in urban areas.
