Answer:
A
Explanation:
B is a pointlessly complicated way to find the mass.
C only works for non-irregularly shaped objects like cubes and rectangular prisms.
D is crazy.
Answer AND Explanation:
Let B represent blue and R red flower.
B B
R RB RB
R RB RB
Therefore the first generation produced all purple flowers RB.
R B
R RR RB
R RR RB
In the second cross, the genotype ratio for RR: RB is 2:2
The phenotypic ratio is 2 red: 2 purple flower.
Answer:
The geologic time scale (GTS) is a system of chronological dating that classifies geological strata (stratigraphy) in time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events in geologic history. The time scale was developed through the study and observation of layers of rock and relationships as well as the times when different organisms appeared, evolved and became extinct through the study of fossilized remains and imprints. The table of geologic time spans, presented here, agrees with the nomenclature, dates and standard color codes set forth by the International Commission on Stratigraphy (ICS).
Explanation:
The immune system works to keep germs out of the body and destroy any that get in. The immune system is made up of a complex network of cells and organs that protect the body from infection. Lymph nodes are part of the immune system. They release lymphocytes, a certain type of white blood cell that fights infection.
Answer:
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Explanation:
