Why do scientists repeat each other's work instead of accepting it and going on to ask and answer a different question?

You might think of how parents look like their children. Their shared characterisitecs are coded in the DNA passed down by the parent. This DNA is in all cells, which copies itself as one cells divides into two.

What is the purpose of a conclusion? A. To predict how something will turn out B. To explain why the data support or reject the hypothesis C. To make an educated guess about a particular question D. To collect or analyze the experimental data

Biodiversity is the number of species ... a. of animals living within an ecosystem. b. of plants and fungi living within an ecosystem. c. of bacteria and protists living within an ecosystem. d. living within an ecosytem.

Purple loosestrife is an invasive plant that was brought to the United States in the 1800s. Which of the following describes the most likely long-term consequence of the introduction of purple loosestrife? A.

Which of the following statements is true? The angle of refracted light is equal and opposite to the angle of incoming light. A magnetic field can be created by running an electric current through a magnet. Exothermic chemical reactions absorb heat.

Which of the following choices is a goal of sustainable practices? A. They focus on using resources for maximum productivity. B. They focus on using resources that can disappear if overused. C. They focus on using resources that can be renewed. D.

Why are atoms so important?

Which of the following is the best example of homeostasis in the human body? and why?

Dna determines the structure of proteins produce by cells?

What does a organism that is still has many cells produce spores and gets food from the enviroment