Fact 1: Constriction occurs when the muscular walls of blood vessels contract. Fact 2: Constriction raises blood pressure. Given the two facts above, answer the question "what happens when muscular walls of blood vessels contract?" with the following options: - matter vibrating - Dehydration - Leptospirosis - rapid expansion - at or near the margins - recovery time from fatigue - blood pressure rises - major threat to health
blood pressure rises

Fact 1: Chemical weathering causes iron in rock to oxidize. Fact 2: Oxidation of iron minerals causes the redness of the rocks. Given the two facts above, answer the question "chemical weathering causes redness of the rocks containing what?" with the following options: - iron - Urea - Gases - red stones - matter - gems - coal - oranges
iron

Q: Fact 1: Plants exhibit phototropism, or growing toward a light source. Fact 2: First, the sun is a brilliant source of white light. Given the two facts above, answer the question "What behavior do plants exhibit that makes them grow towards the sun?" with the following options: - phototropism - Exfoliation - photography - peachleaf willow - chlorophyll - Chemical energy - direct energy - chloroplasts
A: phototropism

Question: Fact 1: Fish have a circulatory system with a two-chambered heart. Fact 2: Mammals have a four-chambered heart. Given the two facts above, answer the question "How many sections does a fish heart have?" with the following options: - ovum - fat - four - p53 - two - cut - bone - stem
Answer: two

*Question*
Fact 1: Force causes the speed of an object to increase. Fact 2: Speed is how fast an object is moving. Given the two facts above, answer the question "What can increase how fast an object is moving?" with the following options: - electrically - flow of electrons - Standing still - Increasing drag - Decreasing pressure - friction - kinetic energy - Applying force
**Answer**
Applying force

*Question*
Fact 1: Many consumers feed at more than one trophic level. Fact 2: Each level on the pyramid represents a trophic level. Given the two facts above, answer the question "Many consumers feed at more than one what?" with the following options: - ground level - kinetic energy - major threat to health - level of sound - eat plants or other animal - level on the pyramid - level of height - Inches or fractions of inches.
**Answer**
level on the pyramid