Due will mark as

4. which of the following sentences is a good hypothesis?
a. how does the human heart pump?
b. goat milk tastes better than cow milk.
c. geraniums are able to reproduce asexually.
d. frogs on land are better off than frogs in the water.

5. how many manipulated variables does a controlled experiment have?
a. none
b. only 1
c. between 1 and 5
d. as many as needed

9. which of the following models would be best for weather forecasting?
a. physical model
b. chemical model
c. conceptual model
d. mathematical model

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.