The iris is composed of muscle layers - an outer layer of longitudinal smooth muscle and an inner layer of circular smooth muscle. The inner circular layer is innervated by the parasympathetic nerves. When these muscles contract, they that cause the pupil to constrict in bright light. the The outer layer of longitudinal smooth muscle is innervated by the sympathetic nerves. When these muscles contract, they that cause the pupil to dilate in dim light.
Answer:
<em>Skin cells are the epidermal cells which cover all the organs of the body by forming a tissue called the skin. ... Muscle cells have many mitochondria which provide lot of energy during contraction and relaxation of the cells. Muscle cells form structures called as muscles.</em>
The chemical process by which complex molecules of protein are made from simple molecules is called Respiration
Answer:a
Explanation i ad this befrpe
Answer:
10000 units in the second
100000 units in the third
1000000 units in the fourth
Explanation:
According to the pyramid of energy, which describes how energy flows from one trophic level to another, only about 10% of the available energy is transferred to the organism in the next trophic level as a lot of energy (about 90%) is lost as heat.
In this question, in order to have 1000inits of energy in
- Second trophic level = 1000 = 10/100 × x
10x = 100000
x = 10000units of energy
- for third trophic level,
100 × 1000
= 100000 units of energy
- for fourth trophic level;
1000 × 1000
= 1,000,000 units of energy.
