Answer is labyrinthodont
About 110 million years ago, labyrinthodonts ( maze-toothed), a group of extinct amphibians. They were evolved from lobed-finned fish in the Devonian period. They were dominant animals in the rift valley was present at that time between Antarctica and Australia.
b: the vinegar solution was hypotonic , causing the egg to lose mass
c: the vinegar solution was hypertonic , causing the egg to gain mass
d: the vinegar solution was isotonic to the egg so the mass remained constant
a) is the right answer
It suggests that all species share a common ancestor and that change occurs over time.
This scientific theory, introduced by Charles Darwin, proposes that all living organisms on Earth are interconnected through a shared ancestry. According to this concept, the diversity of life arises through a gradual process of descent with modification. The idea is that species change over time through the mechanisms of natural selection, genetic drift, and other evolutionary forces.
The common ancestor represents the starting point from which different species have branched out, adapting to diverse environments and ecological niches. The evidence supporting this theory includes fossil records, comparative anatomy, molecular biology, and observations of natural selection in action. In essence, the theory of evolution serves as a unifying framework in biology, explaining the unity and diversity of life on Earth.
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All species share a common ancestor and that change occurs over time
likely cause of the problem?
O A. toxic waste spilled during accidents on the
road
B. runoff of oil and other chemicals from the
road
C. wastewater from the city across the
freeway
O D. Any or all of the above could be causing
the problem.
Answer:
D. Any or all of the above could be causing the problem.
Explanation:
Pollution has been said to have adverse effect on living organisms. In this question, a decrease in number of intertidal organisms has been observed. Since a major freeway runs along a stretch of the ocean shore, the most likely cause of the death of the intertidal organisms is the release of any form of toxic waste into the water body.
Oil pollutants causes death of living organisms by hindering the entrance of oxygen into the water body. It makes it difficult for oxygen, which is a requirement for life, to penetrate the water body. Hence, living organisms in the water body will suffocate and die.
Toxic wastes also causes the death of organisms when ingested in excess. Waste water causes deterioration in the oxygen content of the water body. Hence, any or all of the above options can likely cause the reduction in number of the intertidal organisms.