Which abiotic factor is essential to all aquatic ecosystems except ocean hydrothermal vents and why

Classify the structures as homologous or analogous, depending on their structure and function.

Look at the photo of the leaf. which term best describes this leaf?

1. watermelon, papaya, oranges, bananas, and lemons are included in this food group. vitamin c 2. you need 6 or more servings of this food group each day vitamins d and a 3. found in fruit and keeps blood vessels healthy calcium 4. vitamins found in milk bread and grain 5. a mineral that strengthens bones fruit