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Questions in biology

📝 Answered - Two characteristics used to define mammals include: A. mammary glands and scales. B. mammary glands and hair or fur. C. mammary glands and sweat glands. D. sweat glands and a four-chamber heart.

📝 Answered - Why is cell size limited?

📝 Answered - Examine how photosynthetic prokaryotic cells changed the atmosphere of early Earth.

📝 Answered - What is one thing that all types of asexual reproduction have in common?

📝 Answered - The primary building blocks of a DNA molecule are: A. nitrogenous bases, phosphates, and ribose sugar. B. nitrogenous bases, phosphates, and deoxyribose sugar. C. phosphorous bases, nitrogen, and ribose sugar. D. phosphorous bases, nitrogen, and deoxyribose sugar. E. carbon, nitrogen, oxygen, phosphorous, and deoxyribose sugar.

📝 Answered - Compare and contrast centipedes and millipedes.

📝 Answered - Help please: 1. Summarize two harmful effects of acid rain. 2. Predict the outcome: How will the depletion of the ozone layer affect human health? 3. Describe the greenhouse effect and its impact on Earth's climate.

📝 Answered - What might happen to the sea star population after oyster beds are destroyed?

📝 Answered - How can you separate salt and sugar?

📝 Answered - List five characteristics that mammals have in common.