Answer:
A directory of relatives' phone numbers
Hope this helps
Explanation:
Answer:
A. The children will be more likely to survive than if they did not have the trait.
Explanation:
Process of elimination
B. It will not affect the children.
Cannot be true, if it didn't impact the children then how would survival of the fittest work?
D. The children will be able to adapt if the environment changes.
That just... not how adapting works when it comes to evolution.
C. The children will be more likely to survive than their parents were
Everyone has the same trait, everyone is equal in that regard.
A. The children will be more likely to survive than if they did not have the trait.
"Suppose a pair of animals has a trait that helps them survive in their environment." The trait helps them survive. Not having the trait makes them less likely to survive. A is correct
They are used to pass food to the oral mouth at the center, and can attach to surfaces.
Answer:
Ionic.
Explanation:
Elements with higher electronegativity values are better at attracting electrons in a chemical bond.
- A chemical bond is considered "ionic" if the electronegativity difference between the two bonding atoms is greater than
. - Otherwise, this chemical bond is considered "covalent".
In this example, the difference between the electronegativity of oxygen and lithium is
. Since
, the bond between the two elements would likely be ionic.
It is possible to reach the same conclusion based on the fact that lithium is a metal while oxygen is a nonmetal. When metal elements react with non-metal elements, the product is typically an ionic compound- with ionic bonds between the atoms.
Answer:
Option (B) pH > 2.34 and pH < 9.60.
Explanation:
In a zwitterionic structure, overall negative charge should be 0.
It means, for glycine, the two functional groups e.g.
and -COOH should bear equal and opposite charges in it's zwitterionic structure.
of -COOH (in glycine) = 2.34
Therefore, at a pH > 2.34, -COOH group of glycine exists predominantly as
.
of
(in glycine) = 9.60
Therefore, at a pH < 9.60,
group of glycine exists predominantly as
.
Hence we can say that at 2.34 < pH < 9.60, glycine exists predominantly in zwitterionic form due to presence of
and
in equal amount.