The Brain region that is believed to play a critical role in OCD, is the orbital frontal cortex. Obsessive compulsive and related disorders are a group of overlapping disorders that generally involve intrusive, unpleasant thoughts and repetitive behaviors. An individual experiences thoughts and urgents that are intrusive and unwanted and/or the need to engage in repetitive behaviors or mental acts.
Plants are called producers because they make their own food. So the grass is the producer.
Answer:
C.
Explanation:
Here is a defintion of the immune system:
The major function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body.
C. matches that definition nicely.
:)
Answer:
The heart pumps blood through the circulatory system, delivering needed materials (glucose, oxygen) and picking up waste (carbon dioxide) from cells all over the body. Organs systems work together to efficiently and effectively provide all body cells with their basic needs to carry out life functions.
