Because the soil didn't have the same nutrients it has now due to lack of decomposition of other plants and animals.
Answer:
b. giving birth to live young (viviparous)
Explanation:
Monotremes include duck-billed platypus and few other mammalian species that are oviparous. These mammalian species do not give birth to young ones, that is, they are not viviparous. Rather they lay eggs and are oviparous.
These species are also characterized by the absence of teeth. The primitive monotremes also exhibit external fertilization.
Examples of egg-laying mammals include anteaters or echidnas and the duck-billed platypus. The laid eggs are carried by females in an abdominal ouch to keep them warm.
<u>Answer:</u>
<em>B) it requires only transfer RNA (tRNA) and ribosomes.</em>
<u>Explanation:</u>
After the <em>transcription of DNA to RNA</em> in nucleus of cell, the ribosomes synthesis protein and this process is known as the Translation. <em>For the translation process to occur, it requires transfer RNA (tRNA) and ribosomes.</em>
The translation process is also known as cell expression. The ribosomes help in translation by inducing <em>transfer of tRNA sequence of anticodon to codon of mRNA.</em>
Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. Apart from this reduction in chromosome number, meiosis differs from mitosis in yet another way. Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells.
