Answer:
A mutation that cause changes to short stretches of nucleotides. These mutations affect the specific genes that provide instructions for various functional molecules, including protein . changes in these molecules can have impact on any number of an organism's physical characteristics
Answer:
a. pepsin
Explanation:
it has a 1 to 2 level which is acidic because anything lower than 7 is acidic
Answer:
Brian most clearly exhibits symptoms of ADHD
Explanation:
ADHD stands for Attention Deficit Hyperactivity Disorder is a medical condition where the affected person develops different brain developmental process that leads to poor attention,restlessness,impatient or impulsive etc.
This type of symptoms are mainly found in children and it may lasts upto adulthood.
This type of behviour affect the child in school and at home.
To cure this disease,the affected person should consult the doctor,apply different therapy,medicines are also used to cure this disease.
Answer:
The executive branch carries out and enforces laws. It includes the President, Vice President, the Cabinet, executive departments, independent agencies, boards, commissions, and committees.
Explanation:
<u>the Paleozoic Era </u>
The Precambrian era describes a period of time that pre-dates Cambrian. This time typically references the entire period of the history of earth before the formation of rocks containing identifiable fossils occurred. It covers the majority of Earth’s history and is divided into the Hadean, Archean and the Proterozoic era.
Just before the Cambrian eruption, in the Paleozoic Era the environment was oxygenated, culminating in an explosion of new life in the Proteozoic Eon (2500-541 million years ago) in the form of primitive blue-green algae named cyanobacteria and oxygen based species. Multicellular species followed later, along with structure at higher levels, and complex life. Oxygen levels grew gradually over this period of time, from low levels.
Learn more about cellular life at brainly.com/question/11259903
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