Answer;
The above statement is true.
Explanation;
-The sun's chromosphere emits radiation in an electromagnetic band that gives humans skin cancer.
-The chromosphere
is the region of sun's atmosphere just above photosphere
.
-The most inner to the outer layers of the sun
are the core, radiation zone, convection zone, photosphere, chromosphere, transition zone, corona, and solar wind.
-The chromosphere produces emission spectrum
and visible UV & X-ray lines from highly ionized gases.
During an El Nino, warm water gathers along the West coast of South America, so the nutrient rich water is no longer being upwelled. keeping in mind that cold water sinks and warm water rises, usually the warm water near coastal regions would not be full of nutrients compared to the cold water where the nutrients fall. therefore, more fish will be located or migrate to areas of this nutrient rich cold water instead. So, many fishermen would not have high yields of fish ultimately affecting their way of life and money. also a lot of these fish that remain at the surface would not be as healthy or nutrient rich.
hope that helps! :))
Answer:
Steps are down below
Explanation
1. A small grain of pollen goes onto the stigma
2. Insects go into flowers and brush against the anther and is coated with pollen.
3. Pollen may fall onto the stigma of the next flower
4. Pollen falls onto the stigma of next flower
5. A small seed forms in the ovary of that plant
Answer:
The purine ring is built onto ribose-5-phosphate of PRPP for its de-novo nucleotide biosynthesis, while the ring structure of the pyrimidine bases are synthesized separately and then coupled to ribose-5-phosphate via the C-N glycosidic bond.
Explanation:
In the de novo synthesis of nucleotides, their metabolic precursors such as aminoacids, ribose-5-phosphate, CO₂ and NH₃ are used as starting materials.
In purine nucleotide synthesis, the ring structure is built up on ribose-5-phosphate of PRPP by addition of one or a few atoms one at a time starting with the amino group donated by glutamine until the first intermediate inosinate is synthesized.
In pyrimidine ring synthesis, orotate is first synthesized from carbamoyl phosphate and aspartate, and then is attached to ribose-5-phosphate of PRPP, before it is then converted to the common pyrimidine nucleotides starting from uridylate.
