The 1st one, an organ system includes tissues. Hope this helps!
After the fossils are buried in the mud the soft tissues start to decompose rapidly. Leaving only the hard shells or bones of the animal. With time, sediment starts to build up on the top and then hardens into rock. The bones then start to decay, minerals start to enter and then end up replacing the organic material cell by cell in a process that is known as "petrification." So the answer you are looking for is B, Mud can prevent oxygen from reaching the dead organism.
Answer:
Genetic disorders are conditions or diseases that are inherited by a person from the parent which is caused by mutation of the DNA.
HIV is different from genetic disorder because it is not inherited rather it is acquired through sex or contact with an infected person's blood through cut,pictures or transfusion.
Explanation:
HIV is a disease that weakens the body defence mechanism in fighting infections thereby making it prone to Infection.it can be acquired through sex or contact with infected person's blood.
Genetic disorders are inherited conditions which is caused by DNA mutation.
Transcription is the first step, where a complementary strand of RNA is made,w which is modelled off the DNA.
This RNA called mRNA (messenger RNA) moves out of the nucleus to the ribosomes (sites of protein manufacture) where translation occurs. Translation is where amino acids are made to string together based off the code in the mRNA
