Answer:the component materials and their arrangement
Explanation:
Bone are important for movement in animals.bones is made up of 15% water,30% collagen fibres and 55% mineral salts..bone cells are widely separated. The Collagen makes bones soft and flexible. Mineral salts makes it fragile and strong.
The osteogenic cells builds the bones and the osteoclasts breaks down older bone tissue, in order to keep the body strong.
Spongy bones contains tiny spicules that helps in strength.
It also reduces the weight of the bones .
The cells of Compact bones are arranged in the direction of stress to keep the bone strong.
They are constantly changing throughout life
Answer: Sexual reproduction: rabbits and dolphins.
Asexual reproduction: Strawberry and potato.
Explanation:
- Sexual reproduction is carried out with the participation of germ cells from two stem organisms - female and male, which transfer the properties of the inherited material to the new plant. The main characteristic of sexual reproduction is the division of the relative fusion of male and female sex cells. The end product of this relationship is the creation of an organism that contains the genetic information of both parents.
- Asexual reproduction is a habit that produces an organism identical to the parent organism, and we call this product clones. This form of reproduction does not involve the germ cells and may occur by division or budding. Many types of plants reproduce in this way. So the strawberries are propagated by boils, and the potatoes are buds from the tub
Answer:
C. 65 million years ago
Explanation:
The current locations of the continents and their modern day inhabitants, including humans, can be traced to this period.
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The right answer is D) 9 groups of 3 microtubules
Centrioles are the constituents of a so-called centrosome structure: every animal cell has a centrosome, which is made of two centrioles and which together form a functional unit. A centriole consists of nine triplets inclined microtubules, surrounded by a number of proteins.
The correct answer is "<span>Creutzfeldt-Jakob disease".
</span>Creutzfeldt-Jakob disease is a disease which causes severe<span> dementia and myoclonus. </span>a couple of<span> sclerosis is a </span>persistent<span>, degenerative, </span>modern ailment<span> of the CNS </span>characterized with the aid of<span> the </span>prevalence<span> of small patches of demyelination </span>within the brain<span> and spinal </span>wire<span>. Parkinson's </span>disease<span> is </span>related to reduced tiers<span> of dopamine </span>because of<span> destruction of pigmented neuronal cells </span>inside the<span> substantia nigra </span>within the<span> basal ganglia of the </span>brain<span>. Huntington </span>sickness<span> is a </span>chronic<span>, </span>modern<span>, hereditary </span>disorder<span> of the </span>nervous machine<span> that </span>outcomes<span> in </span>modern<span> involuntary dancelike </span>movements<span> and dementia.</span>
