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ok so i think the X shape is a chromosome, that blank space in the big spot is calleed a nucleas. The arrow on the top right is a cell, the bottom right is base pair, the bottom left is dna and the top middle is called the gene.
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Answer:
An old penny rusting
Explanation:
A penny forming rust is the penny being chemically altered and changing form as opposed to dissolving sugar in water, which is still sugar, just mixed with water. It doesn't change the chemical makeup of the water or sugar.
Answer: Selection occurs within generations; evolution occurs between generations. All four of Darwin's postulates are true for the medium ground finch population on Daphne Major. Darwin's theory therefore predicts a change in the composition of the population from one generation to the next. In biology, evolution is the change in the inherited traits of a population from generation to generation. ... Natural selection is a process that causes heritable traits that are helpful for survival and reproduction to become more common, and harmful traits to become more rare.
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Answer:
b) Reptiles, birds, and some mammals produce amniote eggs.
Explanation:
All the mammals produce amniotic eggs. An amniotic egg is an egg that has four extraembryonic membranes including amnion. Amnion is a fluid-filled sac that serves as a cushion and does not allow the egg to desiccate. Since mammals are land animals, they have amniotic eggs to prevent any damage to the embryo from desiccation and physical injury.
Four laws or principles are involved in the study of stratigraphy are:
1. Principle of original horizontality
2. Law of superposition
3. Law of crosscutting relationships
4. Principle of Lateral Continuity
