You are presented with the question "which can help warm-blooded animals stay active in cold?" and the following answer choices: - shivering - four limbs - Animal fur - sleep - sweating - hibernation - cold blood - fur seals Now knowing that mammals can also generate little bursts of heat by shivering and most mammals can be active even in cold weather because they are warm-blooded, choose the best answer.
shivering
You are presented with the question "What kind of effect does a squirrel have on the ecosystem?" and the following answer choices: - Negative - Positive - adding heat - growth - food - Destructive - Powerful - support Now knowing that planting trees has a positive impact on an ecosystem and thus one important job the squirrel does in the ecosystem is to plant trees, choose the best answer.
Positive
Q: You are presented with the question "what is adrenaline a response to?" and the following answer choices: - earthquakes - water - magnetism - threats - Heart rate - hormones - threatened - heat Now knowing that threatening behavior causes a fight-or-flight response in animals and adrenaline is for emergency use only in a fight and flight situation, choose the best answer.
A: threats
Question: You are presented with the question "An organism that uses pollination as the fertilization step in sexual reproduction also performs wha" and the following answer choices: - competition - rapid expansion - in the autumn season - peachleaf willow - Chemical energy - important habitats - heat energy - Photosynthesis Now knowing that pollination is the fertilization step in the sexual reproduction of plants and plants use sunlight for photosynthesis, choose the best answer.
Answer: Photosynthesis
*Question*
You are presented with the question "_ are needed to maintain energy levels " and the following answer choices: - Ligaments - follicles - hydration - environment - glucose - pores - exercise - Arteries Now knowing that arteries generally carry oxygen-rich blood and energy levels can plummet due to lack of oxygen-rich red blood cells, choose the best answer.
**Answer**
Arteries
You are presented with the question "Antibodies are large, Y-shaped proteins that recognize and bind to" and the following answer choices: - humans - positive - immunogens - animals - A Greek letter - protect them - Allergies - the skin Now knowing that antibodies are large, Y-shaped proteins that recognize and bind to antigens and aLL immunogens are antigens, choose the best answer.
immunogens