MCQ
An ecosystem resists change because it is in a state of:
- AImbalance
- BHomeostasis
- CShortage of components
- DDeficiency of light
Explanation:
An ecosystem resists change because it is in a state of homeostasis.
Homeostasis is also known as a biological equilibrium.
Equilibrium is the steady-state of an ecosystem where all organisms are in balance.
The balance is maintained by a number of factors. These include the carrying capacity of the environment and the capacity for recycling waste.
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$I.$ The cells of malignant tumours divide erratically.
$II.$ They are malignant tumours of epithelial cells.
$III.$ They are malignant tumours of organs that originate from mesoderm.
$IV.$ These tumours are found in organs such as spleen and lymph nodes.
Which of the above are true for angiosarcoma?
$I$. rheumatoid arthritis $II$. Alzheimer's disease
$III$ cancer $IV$. Cystic fibrosis
Choose the correct option