A chemical change has occurred because the wood has turned into a substance that can't be changed back to it's original form. The wood has turned to ash, chemical changes are non reversible.
As part of its food safety
program, USDA has simplified food safety rules into clean, separate, chill and cook.
Following these core four practices for food safety helps to prevent bacteria and
to reduce one’s risk of foodborne illness. The rule emphasize on washing of hands
and surfaces often, separating food substances to avoid cross-contamination, cooking
to the safe internal temperature and proper refrigeration of food.
Answer:
I think it is probably A. If it not a. then d.
Answer: Diploblastic animals have radial symmetry.
Phylum porifera lack body symmetry and are therefore call asymmetrical this is because their bodies lack true tissues, true organs and there body is well adapted for water and water flows through their body and deposit nutrients needed for growth and development.
Explanation:
Diploblastic organisms meaning organisms that have two germ layers(ectoderm and endoderm) have radial symmetry because their symmetry is located along a central axis examples are the sea anemone and jelly fishes belonging to phylum cnidarians.
Phylum porifera e.g sponges are assymetrical that is they have no body plans and this is because the shapes of their bodies is adapted to water and water flow allow nutrients to enter their body for growth.
