Which of the following is an example of migration?

A.) Woodchucks store up extra energy for winter, then sleep until the warm weather returns.

B.) During the dry season, elephants travel long distances to reach rivers and other water sources.

C.) Over winter, a seed remains unchanged within the soil, not germinating until the temperature warms.

D.) Baby birds remain in their nests until they grow the feathers needed for flying, at which point they become fledglings.

Which symbols below represent the ions found in the glass of water ? a. oh- and h+ b. co2 and o2 c. o2 and h2 d. nh3- and h+

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit. 1. deciduous trees lose their leaves seasonally and include trees such as maple and elm. 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include cedar and pine. 3. evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as maple, , and cedar. elm returned you filled in 2 of 10 blanks incorrectly. mango trees are tropical broad leaf plants that maintain their leaves all year long. no credit lost. try again.

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from