Answer:
An organ is more complex than a tissue
Explanation:
A group of tissues form an organ just like a group of similar cells form a tissue
The answer is the non-exercise activity thermogenesis. Energy expended from fidgeting is called the non exercise activity thermogenesis (neat). Basal metabolic rate is the energy expended to support metabolism. Thermic effect of food (tef) is the energy expended for the digestion, absorption, and metabolism of nutrients.
Ionic bonding
(a brainliest would be appreciated)
I believe they are called endothermic.
Endotherms also called warm blooded animals are those that maintain a constant body temperature independent of the environment. They primarily includes, birds and animals, but some fish are also endothermic. On the other hand ectothermic animals or cold blooded animals are those whose regulation of body temperature depends on the external sources such as sunlight.
