Answer:
Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust.
Sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification. Erosion and weathering include the effects of wind and rain, which slowly break down large rocks into smaller ones.
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
Explanation:
In the world of birds, usually males are more colorful or ornamented than females. The explanation for this is sexual selection (traits that help one gender to be successful). This phenomenon, allows to males to compete with other males. For example, more colorful males might seem more dangerously. On the other hand, ornaments and colors of male birds can attract the attention of females.
Answer:
Matrix, Mitochondrion, Kreb's cycle, Pyruvic acid
Explanation:
The above question illustrates aerobic cellular respiration, specifically the second stage called Kreb's cycle or Citric acid cycle. This process occurs in the inner membrane of the mitochondrion of eukaryotic cells called MATRIX.
It occurs when the pyruvic acid produced during Glycolysis (first stage of cellular respiration that occurs in the cytoplasm) is converted to Acetyl CoA in order to enter the citric acid cycle in the mitochondrion. The Acetyl CoA is then used in a series of reactions that comprises of reduction-oxidation, hydration, dehydration, and decarboxylation.
This reactions involving 8 steps converts the Acetyl CoA (from pyruvic acid) to 2 molecules of CO2, 1 molecule of GTP/ATP, and electron donors NADH2 and FADH2.
Answer: nucleotide A will bind to nucleotide T during DNA replication.
Explanation:
In DNA replication, Adenine(A) pairs up with its complementary base Thymine(T). The DNA polymerase which is an enzyme ensures that the nucleotide with base T binds to the base A of parental nucleotide.