Answer:
a) Teeth arose from the rough scales of ancestral sharks.
b) Skeletal developments leading to the amphibian movement onto land probably evolved from lobe-finned fishes.
d) The anterior gill arch formed the basis for the evolution of the vertebrate jaw.
Explanation:
The animals we know today have physical characteristics that are evolutionary adaptations of characteristics of their ancestors, which have undergone a series of evolutions and modifications over the years giving rise to new species that have resulted in the species we know today. This process of evolutions and adaptations also happened with the ancestral species of fish, which allowed that today, they had characteristics such as teeth and jaws. Many of these evolutions occurred even in different species, such as the evolution that allowed the amphibians to have a skeleton, which evolved from the spine fins of fish.
Answer:
D
Explanation:
D is mitochondria, which are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell. The biochemical processes of the cell are known as cellular respiration.
Person above me seems smart
I believe that the probability of having an individual with attached earlobes will be 50%. Since the attached earlobes is recessive then its genotype will be (ee), for the unattached ear lobes the genotype will be EE, Ee. Therefore, mating between an individual with attached ear lobes (ee) and one with unattached ear lobes, heterozygous, Ee, the offspring will be; Ee, Ee, ee, or ee. Therefore; half of the offspring will have unattached ear lones (heterozygous) while another half will have attached ear lobes.
Weathering and erosion ( they caused water and wind action)
