The nutrients and waste exchange occur in the capillaries
Marine mammals , with few exception are viviparous.
Explanation:
- Mammals are those animals which are characterized by the presence of mammary gland and body hair.
- They feed milk to their young ones.
- The vertebrates are classified as viviparous, oviparous and ovoviviparous depending on the way their young ones develop and are nourished during their embryonic and foetal development.
- Viviparous animals are those which directly give birth to their young ones and have a distinct gestation period during which their babues develop inside their womb. These are placental mammals.
- Oviparous animals are those which lay egg and the embryo develops outside mothers body.
- Ovoviviparous animals are those who do not lay their eggs but their eggs hatch inside their body .These are aplacental animals.
- Most mammals are viviparous.
The ovaries are a physical structure and the function of the ovary is to produce eggs in the birds.
<h3>Physical structures of birds</h3>
The physical structures are those structure that we can see in an organism but externally and internally. The table is not shown here but we can still make some corrections.
The ovaries are a physical structure and the function of the ovary is to produce eggs in the birds.
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Proteins are different than both carbohydrates and lipids in important ways because they contain long chains of amino acids and their molecules contain peptide bonds
Proteins makes up one of the six major classes of food which include:
- Carbohydrates,
- Minerals,
- Vitamins,
- Water,
- Fats and oil
It is a macronutrient that is needed for body building and repair of worn out parts of the body.
Proteins are different from other macronutrients because:
- They contain long chains of amino acids. These can be essential or non essential amino acids which combines together to form proteins.
- Their molecules contains peptide bonds. These are covalent bonds that links the amino acids.
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