In humans, the yolk sac is the
site of origin for blood cells and primordial germ cells. The human yolk sac is
a membrane located outside the embryo and it is connected by a tube through the
umbilical opening to the embryo's midgut. The yolk sac serves as an early site
for the formation of blood and in time, is incorporated into the primitive gut
of the embryo.
Their are three main characteristic is intensity, saturation, and hue .
Red color is motivated by power, black is achromatic color with hue like white gray and white.black is symbol of darkness. Brightly co-loured object is one that reflects and transmits a large portion of light falling on it.
The great amount of light is reflected on white screen while a black screen would not reflects any light. Co-lour also linked with various personality trait , motivation and productivity levels in life. It symbolize life and death , love and evil and happiness and anger.Red color makes you feel passionate and energized.
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Answer:
By identifying the bones as being homologous structures and by proposing that humans, bats, and dolphins share a common ancestor.
Explanation:
B. Gene. Piebalding is caused by mutant copies of genes.
Answer:Airedale Terrier is a Dog specie,the Airedale Terrier is the largest of all terrier breeds.
(1) Respiration
(2) Nutrition
(3) Reproduction
(4) Movement
(5) Irritability
Explanation: A living specie is a specie that poses all the characteristics of a living organisms such MOVEMENT, REPRODUCTION, NUTRITION, IRRITABILITY,GROWTH, EXCRETION, REPRODUCTION AND DEATH.
Respiration is the process through which living organisms take in oxygen in order to break down food for the release of energy and carbon dioxide.
Nutrition is the process of feeding or intake of nutrients Airedale Terrier feeds on both plants and animals ( OMNIVORES).
Reproduction is the process through which the younger generation are brought to life Airedale Terrier reproduce through Sexual reproduction.
Movement is the change of location,Airedale Terrier moves from one point to another.
Airedale Terrier responds to different stimuli ranging from sound,light,touch, taste etc.
