We share an environment with many harmful organisms, so we need a way to protect ourselves
Answer:
Answered below
Explanation:
Water is essential for the normal functioning of the organ systems in the body. Dehydration occurs when the water we take in is less than the water we lose. Water is lost fr the body through sweating, breathing, urination and defecation. Disease conditions like diarrhea and vomiting also cause loss of water.
When the body senses dehydration, there is a thirst signal to tell us to drink more water. The body then proceeds to the water leaving through the kidneys thereby conserving water in the body. This explains the concentrated and colored urine during dehydration.
Circulation to the skin and muscles is decreased, leading to dry and clammy skin, muscle cramps, dry eyes etc
The body increases the heart rate and pumps blood to the vital organs such as the brain, lungs, heart and intestines.
Answer:
The common characteristics of Archaebacteria known to date are these: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls, with in many cases, replacement by a largely proteinaceous coat; (3) the occurrence of ether linked lipids built from phytanyl chains and (4)
Explanation:
In science, it mean 'Million Years Ago'
It could also be used in astrology and biology
Answer:
Identical Twins
Identical twins share all of their genes and are always of the same sex. In contrast, fraternal, or dizygotic, twins result from the fertilization of two separate eggs during the same pregnancy. They share half of their genes, just like any other siblings.