Which of the following is not a factor influencing preventive measures used to combat the spread of disease? A. Antibiotics B. Cleanliness of food C. Sanitation D. Behavior

The ocean floor is at a lower elevation than the continents. Which of the following pieces of evidence best supports this claim? A) Tectonic plates located below the continental crust do not move.

A true-breeding black rabbit is crossed with a true-breeding brown rabbit. All of the F1 rabbits are black. Two of these black F1 rabbits were crossed together and produced exactly two offspring.

Compare a cell that has grown too large to be efficient with a wireless network that has too many users explain how both have the same problems

What type of molecules are antigens?

Describe the experiments that revealed the structure of the genetic material. If a sample of DNA contains 8% adenine (A), then what are the percentages of thymine (T), cytosine (C), and guanine (G)

A country that has been relatively poor is starting to become wealthier. This has brought many people into the capital city, causing the population to grow very rapidly.

An inactive gene inherited from an ancestor is an example of which kind of evidence for evolution? A. DNA B. fossil C. anatomical D. radiometric

Which choice is a biotic factor of an ecosystem soil air ants sun

Which of the following are necessary for a seed to germinate? 1. moisture content of seed must be at least 9% 2. Moisture content of the seed must be less than 9% 3. certain enzymes in the seed are activated 4. temperature must be above 80 degrees 5.

Give 2 possible circumstances or actions that may lead to a decrease in the TFR of a population