. Igneous rock is formed through the cooling and solidification of magma<span> or </span>lava<span>. The magma can be derived from </span>partial melts<span> of existing rocks in either a </span>planet<span>'s </span>mantle<span> or </span>crust<span>. Typically, the melting is caused by one or more of three processes: an increase in </span>temperature<span>, a decrease in </span>pressure<span>, or a change in composition. In this case, the "rock" is ice. The hot water has cooled through a change of temperature to create a solid structure (ice).</span>
When Charles Darwin considered wings of birds, apart from his famous proposal he also predicted that fossils will be found with structures that are intermediate between early and modern form.
Answer: Option C
<u>Explanation:</u>
Charles Darwin was basically referring to transitional Fossil while considering Wings of bird. So what are transitional fossil? They are the fossil remains of both the ancestral group and the descendant group.
Since we don’t have enough record of the fossils, it is very difficult to know the accuracy of transitional fossil. However, we do have some record of fossils from which we can gather enough evidence of how the fossils where earlier and how it evolved over a period of time.
Dna profiling and replication, stem cell and tissue engineering, <span>xenotransplantation</span>
Answer:
23 Chromsomes
Explanation
Thus, if a skin cell or somatic cell contains 46 chromosomes then the egg or sperm (gametes) would contain only 23 chromosomes
