OCR General Certificate of Secondary Education (GCSE) Biology Practice Exam

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Study for the OCR GCSE Biology Exam. Use multiple choice questions and quiz flashcards with explanations and hints. Excel in your exams!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What are some repercussions of rising CO2 levels?

Decreased agricultural yield
Stabilization of global temperatures
Melting ice caps and habitat loss
Increased biodiversity

The correct answer is: Melting ice caps and habitat loss

The correct choice highlights a significant environmental consequence of rising carbon dioxide levels. As CO2 concentrations increase, they contribute to global warming by enhancing the greenhouse effect. This process leads to higher average global temperatures, which in turn causes polar ice caps and glaciers to melt. The melting of ice caps contributes to rising sea levels, threatening coastal habitats and ecosystems, which are critical for various species. Additionally, the loss of habitats due to climate change can lead to decreased biodiversity. Many species depend on specific habitats that are increasingly vulnerable to temperature changes and melting ice. Therefore, the impact of rising CO2 levels on melting ice caps and habitat loss is a crucial aspect of understanding climate change and its repercussions on global ecosystems.