Answer:
All organisms that have life, both plants and animals.
Explanation:
You didn't provide an illustration, but I guess I can still help. Biotic factor means that it has life, abiotic means it's not alive (hence the a- at the beginning.) Some biotic factors of a pond ecosystem include: earthworms, fishes, frogs, plants and insects.
The earth rotates on a spinning tilted axis which causes the sun to face different sides of the earth, thus causing season changes.
Answer:
Substitution mutation is a type of mutation which is responsible for sickle cell anemia disease.
Explanation:
Substitution mutation is also called point mutation. In sickle cell anemia, glutamic acid is converted into a valine acid which is the main cause of sickle cell anemia formation. In this mutation, the shape of oxygen carrying cell i. e. hemoglobin changes into a sickle type. This sickle shape of the cell prevents the flow of blood in the capillaries.
