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What happens when there is a sustained physiological activation in response to stress? the elasticity of the arteries increases. the rate at which fatty buildup takes place decreases. heart rate and blood pressure remain elevated.

If a scientist finds the remains of a plant between a rock layer that contains 400 million-year-old Phacops fossils and a rock layer that contains 230 million-year-old Tropites fossils, how old could the plant fossil be?

Describe the relationship of cells, chromosomes, genes, and DNA.

3. When did the human population begin to grow at a faster rate than at any other time in history? A 8,000 years ago B 20,000 years ago C 300 years ago D 1,000 years ago

Why don't we see huge flocks of bald eagles flying around in the sky?

Changes in genes within a kind do not form a different kind. true or false

This is the energy that comes to Earth from the sun.

If we increase our food intake, we generally gain weight. nutrition scientists can calculate the amount of weight gain that would be associated with a given increase in calories.

Who's more likely to survive a bullet wound; a body builder or an obese person?

What is the one characteristic shared by aerobic cellular respiration, lactic acid fermentation, and alcoholic fermentation?