The surface area to the volume ratio gets smaller as the cell gets larger. If the cell grows beyond a certain limit not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.
Hope that helps
The first event in the history of DNA studies was Johannsen identifies inherited traits as "genes"
- C. Johannsen identifies inherited traits as "genes"
<h3>Who was Johannsen?</h3>
noting that selection was only effective when based on genetic (genotype) rather than environmental (phenotype) differences.
With this information, we can conclude that Although Mendel conducted his experiments with pea plants in the mid-1800s, it was not until 1909 that Johannsen became the first person to describe Mendel's individual units of heredity. He called them genes.
Learn more about Johannsen in brainly.com/question/13256075
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D.) Fossils. Fossils are skeletons of creatures that lived in the past.
The answer is D, 15,000 x 0.2= 3000 add that together =18,000
