Answer:
birch
Explanation:
because they easily germinate hence early succession
Protections the ozone layer
Maintaining animal and human food chain
Preserving potable water and making efficient use of non renewable resources
Answer: It is called Parasitism.
Explanation:
Parasitism is symbiotic relationship where an organisms lives in or on it's host thereby feeding and causing harm on it host. Examples of such relationship is parasites like roundworm, ticks, fleas that feed on humans and cause harm.
The answer is Abduction. In medicine and biomechanics, movements of limbs and other body parts toward or away from the center line of the body are termed as adduction and abduction respectively. Adduction is the movement of a body part toward the body's midline. Abduction is the movement away from the mid line. For example, abduction of the shoulder raises the arms out to the sides of the body.
This layer is called the cell wall.
The cell wall is located outside the cell membrane and provides the cells with structural support and protection. It gives cells rigidity and strength, offering protection against mechanical stress.
In most cells, it is flexible, meaning that it will bend rather than hold a fixed shape, but has a lot of tensile strength which is necessary to be able to withstand internal osmotic pressure.
Cell walls are found in plants, bacteria, fungi, algae and some archaea.