Why are theories accepted as true?

Evaluating a person's food intake using food records is one of the ways nutritionists determine what people eat and their nutrient intake. this allows the nutritionists to assess the person's:

Which of the following is true? a. Extracellular matrix is a recent discovery. b. Extracellular matrix was discovered nearly 5 years ago. c. Extracellular matrix was discovered nearly 10 years ago. d.

Are males and females fundamentally the same except for sexual organs or are they essentially different in many important ways? Are gender roles determined by biology or are they socially-constructed?

Under drought conditions, predict a likely change in the water cycle. A) water does not evaporate into air B) less groundwater accumulates C) increased run-off D) increased precipitation

Which of the following mutations could result in a truncated protein? Choose all that apply. Which of the following mutations could result in a truncated protein? Choose all that apply.

What benefit would an improved muscle tone from strengthening the quadriceps femoris muscles provide?

What is a organism that makes their own food?

How many trophic levels are there in the following food chain? algae mosquito larvae dragonfly larvae - trout

If you were shipwrecked on the northwest shore of the sea of okhotsk, which of these physical regions would you most likely be closest to?

Why does the nucleus have a positive charge?