Answer:organisms that happen to share a common trait, even though they evolved
Explanation: polyphyletic groups have similar characteristics but
that have been grouped together
They do not share an immediate common ancestor.
Answer: D
Explanation:
lIf the change in the ecosystem occurs, then it would effect the weather, temperature, and the abiotic factors. So, we can see that the bacteria could survive in any sort of temperature. So, A can't be it. Also, B can't be it because the grass can grow in any sort of soil, even if the soil is contaminated. C cant be it because even if the change in the envoriment (temperature, contaimination) kills of one of the brown bear's food source, they can still have other things they can eat. But, if the weather gets too hot or the soil gets contaimnated and kills off the ecalyptus plants, the koala has nothing else to eat. So, best answer is D.
Answer:
It is as potential for the rapid growth in the future.
Explanation:
The age pyramid structure or population pyramid may be defined as the graphical distribution of the different age group of the population. Different age groups are pre-reproductive, reproductive and post reproductive.
Different age pyramids are expanding population ( pyramid shape) decline population ( urn shape) and stable population. The age group of the pyramid population determines the potential or the ability of the rapid growth of the country in the future.
4.a form of calcium carbonate
