Heterotrophic. Only plants have cell walls, so that goes to phytoplankton, andwhales have thousands of cells, so unicellular goes to plankton again. Mammals aren't prokaryotic, so we're left with heterotrophic.
The whales are large mammals which are native of sea habitat. These mammals obtain food by killing other sea animals. Hence, the whales are hetrotrophic in nature. Hetrotrophic organisms are those which organisms which cannot synthesize their own food by the process of photosynthesis, these organisms are dependent upon other organisms for their food requirements.
The phytoplanktons are small single celled organisms abundantly present in the water body, they are capable of performing photosynthesis. Therefore, they are autotrophic not hetrotrophic.
Skeletal muscle is a form of "striated" (striped) muscle tissue. It is under the voluntary control of the somatic nervous system. Most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons.
30.6 • 150 is the same as 4,500 + 90, or 4,590 million kilometers, oddly enough, this isn't one of the options for an answer. Perhaps there was a typo?
