Fact 1: Water vapor cooling causes that water vapor to condense. Fact 2: When water vapor cools, it condenses to form clouds. Given the two facts above, answer the question "How are clouds formed?" with the following options: - dry and hot - heating liquids - Physical weathering - solid, liquid, gas - dormant state - colder and wetter - evaporation - Cooling vapors
Cooling vapors

Fact 1: Male dogs use pheromones in urine to mark their territory. Fact 2: During Urination Dog's urine is used as a scent marker for other dogs. Given the two facts above, answer the question "How do male dogs mark their territory?" with the following options: - Chemical energy - Hot dog eating contest - Adequate signage - with their fur - Scent marker - heat produced - mate with females - Paint
Scent marker

Q: Fact 1: Antibodies are large, Y-shaped proteins that recognize and bind to antigens. Fact 2: Allergens are also called Antigens. Given the two facts above, answer the question "_ bind to allergens." with the following options: - to stay warm - mammals - fur and fat - animals - protect them - Most plants - Antibodies - Chemical energy
A: Antibodies

Question: Fact 1: Loud noises can cause animals to startle. Fact 2: Thunder is a rich source of loudness. Given the two facts above, answer the question "what can cause animals to startle?" with the following options: - Electrical - thunder - sleeping - rapid breathing - dogs - influenza - vehicles - Pollution
Answer: thunder

*Question*
Fact 1: The surface of a beach is formed by mechanical weathering. Fact 2: Water is a mechanical weathering force. Given the two facts above, answer the question "what is the surface of a beach formed by?" with the following options: - a wave - gravity - water - plates - density - the sun - calcite - Rocks
**Answer**
water

(Q).
Fact 1: Echinoderms lack a centralized nervous system. Fact 2: Sand dollars and sea biscuits are also echinoderms. Given the two facts above, answer the question "What lacks a centralized nervous system?" with the following options: - Damaged hearing - Humans - Horses - Sand dollars - insects - Chickens - Pesticides - barnacles
(A).
Sand dollars