How long will it take three quarters of a sample of a radioactive

element to decay if its half-life is 4 days?

a. 2 days

b. 3 days

c. 4 days

d. 8 days

In Mendel's initial experiments, an example of the F2 generation would be a. 75 round seed plants to 25 wrinkled seed plants b. 75 green seed plants to 25 yellow seed plants c. 75 white-flowered plants to 25 purple-flowered plants d. all of the above

Science Investigatory Project Title: The Effectiveness of Citronella as An active ingredient in Mosquito Repellant Soap give 1 page of introduction and background give the statement of the problem, formulation of the hypothesis, significance of the

What do most experiments test? 1:Scientific theories 2:Falsifiability of hypotheses 3:Accuracy of information 4:Predictions based on hypotheses

Explain solar flares and how it affect earth

What do macronutrients provide for the crickets

What best describes the purpose of technology

Explain the process of mitosis in a tissue culture for normal cells.

Which organelle has most of the genes that control the cell?

Which of these eats both plants and animals A scavengers and omnivers b omnivores and carnivores

Sequence the terms below from most complex to simplest. a organ system tissue organ organism cell b cell tissue organ organ system organism c organ organ system tissue organism cell d organism organ system organ tissue cell