Plane joint, also called gliding joint or arthrodial joint, in anatomy, type of structure in the body formed between two bones in which the articular, or free, surfaces of the bones are flat or nearly flat, enabling the bones to slide over each other.
30-100 different molecule types
If we were to differentiate anthroprocentric and biocentric views of the environment you could say that anthroprocentric is more holistic than biocentric. They consider the importance of the environment to human beings. Biocentric sees humans as an individual part of the environment.
Also Biocentric views tend to focus more on biotic factors (living things) and anthroprocentric veer towards the abiotic factors (non-living things).
Crop is the part of the digestive
system you would see in a cross-section anterior to the gizzard. The crop is a
large dilation of the oesophagus and is located just outside the body cavity in
the neck region. The crop stores swallowed feed and water which are then moved
to the rest of the digestive tract while the gizzard is located after the
proventriculus behind the left lobe of the liver. The gizzard contains hard
objects that help in the disintegration of food.