Questions

‘ought’ represents advice, ‘would’ represents strong possibility of an event here. ‘would have’ will be the correct grammatical expression here. The sentence expresses that the accused was not sent to jail because of one witness.

In cancer cells, there is breakdown of these regulatory mechanisms. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancer cells appears to have lost this property. As a result of this, cancerous cells just continue to divide giving rise to masses of cells called tumors. Tumors are of two types: benign and malignant.

The Moscow Metro in Russia carries 8-9 million passengers each day. By comparison, the New york City Subway, USA carries 4.5 million people each day and the London underground , UK, carries just over 3 million.

Mercedes's language in reference to the story "Call of the Wild" actually means civilization. She had brought numerous belongings along with her and they were much more than the dogs could pull. Her decision of not parting with any of the belongings would ultimately lead to her death. One can easily draw a clear difference between civilization and wildness.

In the above options, sperms are the haploid cells. In humans, haploid cells are those have only half the number of usual number of chromosomes. Sperm, gamates and egg cells are the haploid cells examples.