Answer:
because of the use of oil and fossil fuel and the improvement of inventions
Explanation:
The 4 organ systems that are used when running:
1.) Circulatory system
2.) Muscular system
3.) Skeletal system
4.) Nervous system
<span>Gills enhance diffusion between aquatic creatures' blood and the surrounding water. They have a large surface area to increase the area available for gas exchange and a lot of capillaries to increase the bloodflow through the gills. The cells in the capillaries are flattened, which further increases their surface area and the rate of gas exchange.</span>
The Biosphere only contains life on earth's lithosphere
Answer:
75%
Explanation:
This question involves a single gene coding for flower color in pea plants. The allele for purple flowers (T) is dominant over the allele for white flowers (t).
According to the question, two heterozygous purple-flowered plants (Tt) are crossed i.e. Tt × Tt. The following gametes will be produced by each parent; T and t. Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:
TT, Tt, Tt, and tt.
Since purple allele (T) is dominant, offsprings TT, Tt, and Tt will be phenotypically purple-flowered. Hence, ¾ × 100 = 75% of offsprings will have purple flowers.