Answer:
Complex organic food molecules such as sugars, fats, and proteins are rich sources of energy for cells because much of the energy used to form these molecules is literally stored within the chemical bonds that hold them together.
Gradient should be in the blank, hope that helps
D
Only eukaryotic cells have membrane bound organelles. Prokaryotes organelles just float in the cytoplasm.
The type of cell division observed in the Figure is Meiosis. It can be deciphered by the presence of recombination between homo-logous chromosomes.
<h3>What is Meiosis?</h3>
Meiosis is a type of reductional cell division by which a cell produces four daughter cells having half of the genetic material.
Meiosis is a cell division that involves a genetic phenomenon known as recombination or crossing over.
Recombination refers to the exchange of genetic material between non-sister chromatids during Prophase I.
Learn more about meiosis here:
brainly.com/question/8253366
<span>d. All of the above
These behaviors;
Spreading wings
Flattening feathers
panting
are all evolutionary process to maintain body temperature. Birds are warm-blooded animals. Also known as </span><span>homeotherms, which is defined as having the constant body temperature. This is a vital function for the survival of the specie.
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<span>c. are hollow
</span>
The bones of most birds are hollow in order for the weight of the birds to be light for them to fly.
