Answer:
This is so because salmon are a keystone species in coastal environments. They bring Marine Derived Nutrients (MDN) to fresh water. These MDN promote the growth of both the plants and animals in the ecosystem. Without it the amounts of both the plants and animals will drop. Salmon are also a major part of the food pyramid.
Explanation:
Yes its copied and pasted but hope it helps and pls mark brainliest
Answer:
is used by commercial airplanes
Explanation:
The stratosphere is used by most commercial airplanes. This is because this layer of earth is stratified and more stable.
- The lowest level of the atmosphere is the troposphere.
- This layer is where all the bulk of the atmospheric gases are domiciled.
- Weather conditions occur here.
- This layer is not safe for flight due to its turbulent nature.
- The ionosphere is responsible for the transmission of radio signals around the earth.
- The earth's weather occurs in the region of the troposphere.
If a terminally ill patient (example: on Hospice) is a full code at that point but the family cannot present you with a physical original and fully completed DNR, the EMT MUST begin resuscitation measures until the family can present the original DNR. You will have to work the code until you reach the hospital and the family can sign a new DNR at the hospital.
The ethics behind this are tricky but legally, you MUST work the code until the DNR is presented. However, to be kind, you don't have to go overboard with your interventions. You don't have to intubate the individual, you can do with a simple BVM and bag the patient while performing chest compressions.
Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein synthesis. In eukaryotic cells, each class of RNA has its own polymerase, whereas in prokaryotic cells, a single RNA polymerase synthesizes the different class of RNA. Other types of RNA also exist but are not as well understood, although they appear to play regulatory roles in gene expression and also be involved in protection against invading viruses.
They saw how their are different variations of animals and how not all humans are alike with different genetic traits and physial apprerance