Hemoglobin SS and sickle beta zero thalassemia are the most severe forms of sickle-cell disease and are sometimes referred to as sickle cell anemia. Hemoglobin SC disease is considered moderate and in general, sickle beta plus thalassemia is the mildest form of sickle-cell disease.
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The development of the human embryo follows fertilization, and continues as fetal development. By the end of the tenth week of gestational age the embryo has acquired its basic form and is referred to as a fetus. The next period is that of fetal development where many organs become fully developed.
Humans impact the environment in several ways. Common effects include decreased water quality, increased pollution and greenhouse gas emissions, depletion of natural resources and contribution to global climate change.
The size of the proboscis helps the moth to consume the food (nectar) easily from Darwin's orchid.
<h3>What do you mean by Adaptation?</h3>
Adaptation may be defined as the process of modifying one's characteristics to better suit a situation and survive more efficiently.
The size of the tube that produces nectar is just 27.9cm long, while the length of the proboscis of a moth is 30.5cm. It easily consumes the nectar and gets energy for survival as well as reproduction.
Therefore, the size of the proboscis helps the moth to consume the food (nectar) easily from Darwin's orchid.
To learn more about Adaptation, refer to the link:
brainly.com/question/1213023
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Answer:
Phylum
Explanation:
All vertebrate animals belong to a phylum are called ‘Chordata’. Animals with a spine are also called vertebrate animals
