Answer:
spinal cord
Explanation:
In 1965 Melzack and Wall proposed the gate-control theory to explain the phenomena related to pain. This theory suggests the presence of a mechanism at the level of the central nervous system that opens or closes the pain pathways.
The transmission of afferent (sensitive) nerve impulses is modulated by a gate system, located in the posterior antlers of the spinal cord.
Answer:
1.Plants give off oxygen and take in carbon dioxide given off by animals. Animals give off carbon dioxide which plants need to make food and take in oxygen which they need to breathe. Plants cells have cell walls and other structures differ from those of animals. ... Plants are autotrophic Animals are heterotrophic.
2. The main difference between vertebrates and invertebrates is that invertebrates, like insects and flatworms, do not have a backbone or a spinal column. Examples of vertebrates include humans, birds, and snakes. Vertebrates have a skeletal structure with a spinal column or backbone.
e.g tuna for vetebrates , for invertebrates worms
3.Mammals are endothermic vertebrates.
Have hair and fur on the body.
Four chambered hearts.
Have sebaceous (fat secreting glands), sudoriferus (sweat), and scent glands.
Have heterodont dentation (different types of teeth)
Posses diaphragm.
7.Mutualism is a symbiotic interaction in which both species benefit from the relationship. But, parasitism is another type of symbiotic interaction in which the parasite benefits on the expenses of the host. ... The main difference between mutualism and parasitism is the type of relationship
The family structure that is being described in the
description above is step family structure. The step family is being formed by
which one family ends with divorce and the individual is likely to get
remarried, creating a blended or step family that is associated with two
families that are separated.
Answer:
Also shown is each import country's percentage of total Mexican exports.
United States: US$358.9 billion (76% of Mexico's total exports)
Canada: $14.1 billion (3%)
Germany: $7 billion (1.5%)
China: $6.9 billion (1.5%)
Taiwan: $6.8 billion (1.4%)
Brazil: $4.2 billion (0.9%)
Japan: $3.9 billion (0.8%)
