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2.4 Index Cards
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片总数: 5 张•内容版本: v3•公开卡包•更新时间: 8/1/2026
卡片预览 (5 张)
#1
正面 (问题)
Carbon Cycle
背面 (解答)
nature’s way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again.
#2
正面 (问题)
Reservoirs
背面 (解答)
a large natural or artificial lake used as a source of water supply.
#3
正面 (问题)
Positive Feedback
背面 (解答)
occurs in nature when the product of a reaction leads to an increase in that reaction.
#4
正面 (问题)
Negative Feedback
背面 (解答)
A negative feedback loop reduces the effect of change and helps maintain balance.
#5
正面 (问题)
Biogeochemical Cycle
背面 (解答)
The movement of nutrients and other elements between biotic and abiotic factors.