Bees are endangered because of environmental stress. Environmental stress may come from pollution, exposure to lethal amounts of pesticides, and due to scarcity of pollen.
Answer:
Physical
Explanation:
The skin is a physical barrier.
Mechanical barriers are made by mucous membranes
Spinal nerves<span> or motor axons </span>exit<span> the </span>vertebral column<span> via the ventral root where they synapse on motor neuro ganglia, then the ventral horn. sensory </span>nerves<span> enter the</span>spinal<span> cord via dorsal horn, synapse on dorsal ganglia, and enter the </span>spinal<span> cord. ... a painful rupture of fibrocartilage of discs between </span>spinal vertebrae<span>.
hope my answer helps!</span>
Protein is the nutrient that is essential to cellular construction, reproduction, and maintenance.
Answer:
1) Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in.
2) Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages.
Explanation:
