Answer:
A major change over long periods of time is best described as macroevolution.
Explanation:
Macroevolution would be referring to evolution on a larger scale where populations speciate etc. A, B and C are various forms of speciation and microevolution would be referring to smaller changes in evolutionary patterns e.g. in adaptive or physical traits which may not be deemed 'significant' enough to be considered a speciation event.
Answer: a) true
Explanation: The fluid inside the egg helps in the survival of embryo and maintain fluid environment.
It is the Neptune. Uranus and Neptune exchanged spots amid a delicate ride out to their present circles. That is the finish of Steve Desch, an astrophysicist at Arizona State University, who conceives that the greater part of the gas monster planets came to fruition twice as near the sun as they are at show.
Answer:
Threonine has two chiral centers.
The correct options are c. carbon b and d. carbon c
Explanation:
Chiral centers are those that have four different groups of atoms bonded to it. Carbon a has three atoms of hydrogen attached to it so it can't be a chiral carbon. It isn't the carboxyl carbon either since it is double bonded to oxygen. And the amino nitrogen does not qualify anyway because it is bonded to three different groups of atoms, not four.
