Blood and lymph are the two circulating fluids in the animal body. Blood belongs to the circulation system whereas lymph belongs to the lymphatic system. Blood contains pigments which carry oxygen. Therefore, blood can be found in different colors in different types of organisms. But, lymph is a colorless fluid. Blood is composed of red blood cells, white blood cells, platelets and a fluid called plasma. Lymph is composed of white blood cells and a watery fluid. Both blood and lymph possess a circulatory function as well as an immune function. The main difference between blood and plasma is that blood circulates inside blood vessels whereas lymph circulates inside lymphatic vessels.
Answer:
4. Microorganism
Explanation:
Wind, Salinity, Soil moisture are abiotic factors, non living things.
Answer:
eubacteria and archaebacteria
Explanation:
eubacteria is single celled but archaebacteria is multicellular
The backlit screens of computers emit enough light to suppress the hormone melatonin. This hormone rises in the evening and orchestrates daily rhythms.
<h3>What is melatonin?</h3>
Melatonin is a hormone whose secretion in the brain is connected to sleep (i.e. the time of day or circadian cycle).
Melatonin is produced by the pineal gland as an environmental response to darkness.
This hormone (melatonin) is well known to be involved in different sleep disorders, thereby having therapeutic applications.
Learn more about melatonin here:
brainly.com/question/5557798
