A) a common ancestor
Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor
Answer:
Active Transport
Explanation:
Active Transport is moving substances from lower concentration to a higher concentration.
Answer: Romantic
Explanation:
In the Sternberg's theory of love, love is described on three different scales. The three different types of love described by Sternberg were based on intimacy, passion, and commitment.
Sternberg said that Romantic love involves intimacy and passion but lacks commitment. Romantic love has strong components of sexuality and infatuation. Usually romantic love is stronger at the early stages of a relationship.
Answer: Anything living needs to have certain conditions, if for example a group of flightless birds who are adapted for warm weather had their environment get colder each year and more extreme the surrounding plants and other animals may have a difficult time surviving and this will cause the birds to have less food. The birds also will not be accustomed to these changes and will not be able to adapt their bodies fast enough. This also makes reproduction difficult and in turn further dwindles the population.
Hope this helps!
Explanation:
The sickle form of the hemoglobin gene is created when an adenine nucleotide is changed to a thymine. ... That single amino acid replacement in the -globin protein alters the shape and the chemistry of the hemoglobin molecule, causing it to polymerize and distort the red blood cell into the sickle shape.
