The tundra and the savanna desert
Answer:
<h2>A</h2>
Explanation:
1. Sickle cell anemia is an inherited condition, disorder (disease).
2. It is a recessive condition, in which red blood cell become mutated and converted to a sickle like shape, and there aren't enough healthy red blood cells to carry oxygen throughout the body.
3. This condition normally occur when, there is inheritance of two abnormal or mutated copies of the β-globin gene, one allele from each parent.
4. β-globin gene makes haemoglobin.
5. Sickle cell anemia results when glutamic acid being substituted by valine at position 6 ( in short E6V substitution).
6. So, it a single base-pair substitution in the gene encoding the beta subunit.
Which compound has the greatest number of oxygen atoms per carbon atom is carbon, hydrogen, nitrogen, oxygen.
Photosynthetic - relating to or involved in the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
Hope that this was helpful :)
A.Volcanoes release hot air into the atmosphere, contributing to global warming. ... Why do scientists study earthquakes to predict a volcanic eruption? A.When magma moves, it causes earthquakes. B.Earthquakes break the earth apart and cause magma to appear at the surface.
