What is a scientific theory?

A law that is always true

A hypothesis about nature

An educated guess based on observations

An explanation of how the natural world works

Similar structures that are inherited from a common ancestor are called analogous structures. a. True b. False

Which receptors are involved with the proprioception sense? A: stretch receptors in the muscles, tendons and ligaments B: the macula and otoliths in the vestibule C: Nociceptors in the muscles and joints D: The crista ampullaris in the semicircular

The function of a biological macromolecule depends on what other elements it contains. Which of these biological macromolecule is rich in carbon-hydrogen bonds and functions as a long-term energy storage?

Before contact with Europeans, a tiny, isolated group of South Pacific islands had a population of about 50,000 people. Because of poor management of their own resources, the population fell to around 5000 by about the year 1750.

What is the average length of a single cell in micrometers (um) ?

Which substance is a natural land resource used in construction? steel bedrock clay salt

Which three elements do all four biomolecules have in common

What is the most likely reason why volcanologists often rely on model to study volcanic eruptions

What is a biome and what is the difference between a desert, forest, and grassland biome?

Describe how you get energy indirectly from the food that you eat