Answer:
Calculating the age of a skeleton can be done by looking at the number of fused bones (option 3).
Explanation:
The calculation of skeleton bone age takes into account the complete ossification of bones, which occurs at various stages of human development.
<u>In childhood, the epiphyses or ends of long bones are not completely ossified but are formed by cartilage</u>, due to the process of growth. When development is achieved, the growth nuclei and cartilage disappear.
Bone age is a reliable parameter for calculating chronological age, as they are quite approximate.
The other options are not correct because:
<em> 1. </em><u><em>The length of the femur</em></u><em> is useful for calculating height.
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<em> 2. </em><u><em>The shape of the pelvis</em></u><em> helps to differentiate the sex.
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<em> 4. </em><u><em>The color of the bones</em></u><em> is not a useful parameter to calculate the age of the skeleton.</em>
Answer:
There are two major types of cell transport: passive transport and active transport. Passive transport requires no energy. It occurs when substances move from areas of higher to lower concentration. Types of passive transport include simple diffusion, osmosis, and facilitated diffusion.
it shows us how extinct animals looked like
and also helps us know what they used to eat