What physical properties are change by mechanical digestion

The one-celled eukaryotic organisms above are often found in freshwater ponds. What is one characteristic they all have in common? A Nucleus B Cilia C Flagellum D Pseudopodia

Which sentence describes a possible impact of early hunter - gatherer societies on the environment? a. cultivating too many plants drained the land of water. b. introducing non-native species led to the extinction of some plants. c.

Animals have an excretory system that eliminates all wastes except? A) oxygen B) carbon dioxide C) ammonia D) nutrients

If a rat had a lesioned (surgically removed) amygdala and was then placed in the same room with a cat, what would the rat's behavior likely look like? the rat would likely:

The basic structural unit of the nervous system is the? a) axon b) neuron c) red blood cell or d) white blood cell

Diphosophorus oxide is held together by which sort of bonding?

Early in development, every neuron has the potential to

What characterizes an igneous rock that forms from rapid cooling above the earth's surface?

why do you think the blood ph stays neutral while the same amount of lactic acid in water was very acidic

What conditions make for a violent volcanic eruption? a. Magma that can flow easily b. Magma with low gas content c. Magma with low silica content d. Magma with high viscosity