Bodies of molluscs are subdivided into three parts:
*The head that contains the sensory organs and the mouth that contains the radula and odontophores (absent in bivalves).
*The foot is a muscular organ, typical of molluscs, intended for locomotion. It has different shapes depending on the species.
*The visceral mass, as the name suggests, contains the viscera. It is contained in a thin tunic called the coat. It is the mantle that secretes the shell of most molluscs, which serves as protection and / or skeleton and / or regulator of flotation.
Between the mantle and the visceral mass, the pallial rim constitutes a pallial cavity that protects the respiratory organs, and where the metanephridia (excretory organs), the intestine and the genital ducts open.
Answer: Environmental change is a change or disturbance of the environment most often caused by human influences and natural ecological processes. Environmental changes include various factors, such as natural disasters, human interferences, or animal interaction.
Explanation:
Answer:
The larger nucleus of oxygen exerts a stronger pull on the shared electrons in the water molecule, creating the partial negative charge on the oxygen atom, resulting in the polarity.
Cell & Organization
- Example each cell can only perform the job associated with its specific function such as heart cells, brain cells etc.
Energy use and metabolism
-To maintain their internal order, energy is needed by organisms. Energy is utilized in chemical reactions.
Growth and development
-all living things get larger and more complex throughout the organism's life
Response
- Living things will make changes in response to a stimulus in their environment. A behavior is a complex set of responses.
