*18 In a grasslands ecological energy
pyramid, there is 880 kcal of energy
available within the primary producers.
How many are present within the top
consumer level (wolves) as depicted in the
diagram?

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?

Which sets of mrna codons could genetically come for a protein with the following amino acid composition

Availability of food: a. is dependent upon kin selection. b. can be highly variable, depending on season and rainfall. c. is determined by the alpha male only. d. is restricted to individuals in the dominant hierarchy.