Answer:
Water and energy
Explanation:
Water and carbon dioxide are exchanged between the ocean and the atmosphere. Carbon dioxide is taken out of the atmosphere by photosynthesis into plants to produce ENERGY.
Genetic variation is when there are many offspring with different genetics, therefore some offspring might be able to adapt due to its genetics
Skin nerve impulses initiated in mechanoreceptors are transmitted along type B fiber
<h3>What are mechanoreceptors ?</h3>
These detect mechanical deformation e.g. touch or pressure within the skin; stretch receptors in muscles. * mechanoreceptor cells answer a change in the external stimulus (pressure, temperature, etc) by producing voltage pulses across neurons (i.e. generator potentials)
<h3>Where are mechanoreceptors found?</h3>
Mechanoreceptors are sensory neurons or peripheral afferents located within joint capsular tissues, ligaments, tendons, muscle, and skin. Four primary sorts of afferent mechanoreceptors are commonly present in noncontractile capsular and ligamentous structures in human joints: types I, II, III, and IV
<h2>What sends impulses from the skin?</h2>
First-order neurons receive impulses from skin and proprioceptors and send them to the medulla spinalis . They then synapse with second-order neurons. Second-order neurons sleep in the dorsal horn and send impulses to the thalamus and cerebellum
Learn more about skin nerve :
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The periderm is a multilayered tissue that is different from the epidermis which is single layered. It is made of cork cells (phellem) , phelloderm and phellogen (or cork cambium).
Cork cells are nonliving cells found covering the outside of roots and stems to provide protection and insulation to the plant.
The periderm serves to protect the plant from injury, pathogens, excessive water loss and provides insulation for the plant.
