1. MUSCLE TISSUE : allows the heart to contract
2. CONNECTIVE TISSUE : insulates the body
3. EPITHELIAL TISSUE : forms the outer, most protective layer of the body
4. NERVOUS TISSUE : allows the brain to respond to stimuli. Others include sensory input, integration, control of muscles and gland, homeostasis, & mental activity.
(I answered another question just like this two minutes ago, not sure if it was the same person :)
<span>Similarities- Provide same function and purpose, similar characteristics (4 chambered heart), valves in similar positions.
Differences- Human is 1.5-2 X bigger than sheep heart, Anterior portion of sheep heart is parallel to the ground due to the stance of the animal. </span>
<span>The process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide.</span>
Ecological efficiency is the term used to describe how much energy will be passed from lower food pyramid level into the higher level. The amount of energy in primary level will be much higher than tertiary. The difference of level of tertiary(3) with primary(1) would be two level.
Assuming that the ecological efficiency is 10%, then the <span>primary consumer level would be: 50 kcal * 10^(3-1)= 5000 kcal</span>
The preen gland releases oils that the bird spreads over its feathers during preening to maintain them.