Answer:
The correct answer is - Trains can have inconvenient schedules, but produce less pollution than cars do.
Explanation:
Trains are expensive to build and also required land for making routes and stations and platforms for passengers but that can be reimbursed by fare in a longer time period.
Trains also produce pollution but in comparison to cars these are way less contribute to the pollution, However, these are not convenient as they start and reach at a specific time and also sometimes not comfortable like cars.
To answer this we need to analyze each statement
camouflage, mimicry, and stingers: This is meant to escape predation and fend off predators, so this is the correct answer.
hibernation and migration: This is meant for breeding and or food energy storage, to pass hard seasons so is also incorrect.
courtship and breeding behaviors: This is meant for reproduction and to ensure offspring so this is incorrect.
nesting and food gathering: this is a behavior for survival, resource use rather than defense, si this is not correct.
Answer:
The bloodstream carries glucose a type of sugar produced from the digestion of carbohydrates and other foods-to provide energy to cells throughout the body
Explanation:
Answer:
See the answer below
Explanation:
Person X is feeling a burning sensation in several muscles<u> because of the accumulation of lactic acid due to inadequate oxygen in their system.</u> When oxygen becomes inadequate during exercises, anaerobic respiration takes place to augment the oxygen shortage and this leads to the production of lactic acid which accumulates up in the muscles and gives a burning sensation.

Person Y does not feel any burning sensation in their muscles <u>because oxygen is adequate in their system and they do not need to respire anaerobically.</u> <em>Person X exercise regime must have been more rigorous than that of person Y.</em>
Answer:
No
Explanation:
The spotted hyena (Crocuta crocuta Erxleben) and the lion (Panthera leo Linnaeus) are two of the most abundant and charismatic large mammalian carnivores in Africa and yet both are experiencing declining populations and significant pressures from environmental change.