What was the variable in Redi's experiment?

meat sealed in jars that didn't have contact with air

a swan neck flask that prevented air from getting in

uncovered meat that had contact with air

a straight neck flask to allow air to get in

Do plant cells have mitochondria? yes or no

What is the function of the umbilical cord

Spores are part of the gametophyte stage of a plant's life cycle. true or false?

Which eye condition causes objects to appear distorted, blurry, or wavy nearsightedness astigmatism farsighted sclera

Oxygen and carbon dioxide are transported between the blood and interstitial fluid by way of

On the galapagos islands, darwin discovered birds with differently shaped beaks. what might this tell you about the eating habits of the birds on different islands

Which of the following best explains why marine debris is not caused solely by countries bordering the ocean? None of the above Debris is carried to the ocean by winds, rivers, and storms. Marine debris mostly originates from oceangoing ships.

Classify the descriptions as being representative of either the somatic nervous system or the autonomic nervous system

How are pedigrees identified?

Which statement describes renewable resources? A. Fossil fuels are a type of renewable resource B. Renewable resources our artificial C. Renewable resources replenished quickly D. Cheap energy often comes from renewable resources