Your answer is erosion. Hope this helps.
Answer:
When two species share a <u>large</u> number of homologous traits, it is evidence that they share a recent common ancestor. Vestigial traits are those that <u>no longer function</u> in an organism. The presence of vestigial traits can also help determine relationships between species that possess homologous traits that <u>still function.</u>
Explanation:
Homologous traits are similar traits that are found in different species which share a common ancestor. An example of a homologous trait is the forelimb that is found to be similar in humans, whales, and birds, of which the arrangement and structure of their various bones are somewhat similar. The hint is that these three must have evolved over time from a common ancestor. Furthermore, the larger the number of homologous traits shared by two species, the more concrete the evidence it presents that they share a more recent common ancestor. For example, salamanders and lizards share a number of homologous traits which can be traced back to a more recent ancestor.
Vestigial traits are traits or features that are no longer functional or has no known function, and are said to be a remnant part from a past ancestor, which serves as an evidence of the ancestral origin of an organism. For example, the presence of vestigial leg bones in some snakes suggests that they come from an ancestor that are four-legged. Another example is the tailbone in humans, which is said to be remnant part of a tail.
Vestigial traits common in organisms are those that are no longer functional and can be used in determining the relationships between species that possess homologous traits that still function, as stated in the example above. i.e. the tailbone and tail, the vestigial leg bones and legs.
i can help with 9th one because some questions are not visible! 9th answer is C EUKARYA
Answer:
Toxic waste
Explanation:
Toxic waste are chemical substances which are poisonous, can cause cancer, can cause birth defects and may lead death or severe ailment. Toxic waste can lead to poisoning occurs when ingested, inhaled, or absorbed by the skin.
Examples of toxic wastes are Lead-Acid Battery, Mercury (mercury pollution), Pesticides Pollution, Arsenic in Ground Water etc.
Mercury vapors can cause neurological and behavioral disorders like tremors, emotional instability, insomnia, memory loss and so on.