Answer:
excretory system and circulatory system
Explanation:
Blood is part of circulatory system and as it move through various organs it exchanges the gases i.e give oxygen to the cell and take carbon dioxide from them. After taking CO2, the blood becomes impure and hence it passes through the kidney before going to the heart. Kidney is part of excretory system which removes carbon dioxide from blood and thus purifies it.
Answer:
Biotic and Abiotic
Decidious Trees 1. Rocks.
Birch Trees 2. Soil.
Oak Trees 3. Water.
Eastern Chipmunk 4. Sunlight.
Red Tailed Hawk 5. Air 6. Climate.
Least Weasle 7. Rain.
White-Tailed Deer 8. Hills.
Coyote 9. Temperature
Answer:
(b) Oil floating on the surface of water can coat the feathers of birds and marine animals.
Answer: A
Explanation: hypothesis is something na hindi pa napatutunayan at nagpag-aaraalan while theory is something na backedup with evidences and data
queen annes war was also called the war of spanish succession.