Which of the following organisms does not rely on krill as major food source?
adelie penguins
leopard seal
humpback whale
squid
adelie penguins feed mostly on krill but switch to fish during the breeding season and then to squid during the winter. what is a good explanation for this?
fish and squid are more abundance, and krill is more scarce
fish and squid provide more energy than krill
fish and squid is more abundant, and krill is more available
fish and squid is preferred but is not as available during the other months.

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.

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

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