Threatening behavior by predators causes a porcupine to extend its quills, and similarly, threatening or intimidating behaviors are also forbidden. Given these facts, what defense mechanism does a porcupine use when intimidated among the following options: - eardrum - deadly - sound - instincts - steroids - organ - quills - blastoids
quills

Roots grow in length and width from primary and secondary meristem, and most plants have roots . Given these facts, what has a primary and secondary meristem among the following options: - ice - grass - plants - bacteria - cacti - Flowers - potatoes - dogs
plants

Q: When a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight, and plants use the direct light energy from the sun to grow. Given these facts, what change is likely in a hemisphere when it is pointed away from the sun among the following options: - more sunlight per day - movement of tectonic plates - exposure to cold - Plant growth is reduced - the moon appears bigger - Movement of an air mass - solar eclipse - global warming
A: Plant growth is reduced

Question: Bird beaks are generally adapted for the food they eat, and eagles are large birds. Given these facts, what has beaks adapted for the food they eat among the following options: - alpacas - fur seals - chickens - humans - ducks - worms - digestion - eagles
Answer: eagles

*Question*
Mammals can also generate little bursts of heat by shivering, and shivering causes muscle contractions to warm the body. Given these facts, mammals can also generate little bursts of heat through what among the following options: - Movement of an air mass - crackling - Veins and arteries. - electromagnetic energy - house - fire - muscle contractions - aerobic capacity
**Answer**
muscle contractions

(Question)
Algae have varied life cycles, and algae Algae Green algae are the simplest of green plants. Given these facts, the simplest of green plants have what among the following options: - varied life cycles - Chlorophyll - Organic compounds - absorb light energy - photosynthesis - food and shelter - Chemical energy - kinetic energy
(Answer)
varied life cycles