Answer:
B.
Explanation:
most valleys are weathered by running water. Glacier can also weather these. Because of running water it will carry the weathered pieces away.
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Answer:
Homologous chromosomes are two pieces of DNA within a diploid organism which carry the same genes,
D,record observations and measurements.
67 million years ago in the form of phyollths (small sllica flecks in grass that make it difficult to digest)
The correct answer is the homeostasis.
A plant may close and open its stomata to prevent excess water loss and maintain homeostasis.
Homeostasis is termed as the tendency of organisms to maintain and automatic regulation of their internal environment to be in a stable condition.
We say that the plant is in stable condition when the fluid balance and body temperature are being kept in to a pre-set limits which include calcium ions, potassium, sodium and PH of extracellular fluid.
The natural resistance which changes the optimal condition brings about homeostasis.
