Stem cells are what allow planaria to grow and regenerate as the stem cells can change into any of the cells that make up the planaria.
In a turbite bed sediments is deposited chronologically.
Gene mutations can be passed on to future generations and drive natural selection. ... Gene mutations can be helpful, harmful, or neutral for an organism's survival. Only mutations that are helpful in the organism's environment would influence its survival and reproduction
Answer:
Ionic compounds
Explanation:
Ionic crystals are hard and brittle and have high melting points.
b:failure of pituitary gland to secrete ADH .caauses diabetes inspidus.
c:located at the kidney.cortex dark in colour and its the outermost.medulla red in colour and lies at the centre.
