* 2. Which concept is best illustrated in the flowchart below?
Survival
of the
fittest
Struggle for
existence
Overproduction
+
+
limited niches
Change of
species
or
new species
hereditary
variation
environmental
change
genetic engineering
natural selection
dynamic equilibrium
photosynthesis

Sammi is studying the interaction of the digestive and circulatory systems in the human body. she has listed various processes that occur in each of the systems. put the processes in order to describe the interaction between these two systems. tiles nutrients diffuse through the villi of the small intestine.digestive processes break nutrients down in the mouth, stomach, and small intestine.blood is pumped through the circulatory system to deliver nutrients to other organs.nutrients are ingested at the mouth.nutrients enter the capillaries of the circulatory system. sequence

Jane is blood type a her husband is blood type b. jane is puzzled because their daughter is type o. explain how the daughter inherited a blood type that neither of her parents had explain your answer

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above