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elena-14-01-66 [18.8K]
3 years ago
7

What is the least diverse (fewest number) group of living things found in Pennslyvania

Biology
2 answers:
Ulleksa [173]3 years ago
6 0
Invertebrates can be the least diverse
scZoUnD [109]3 years ago
5 0
Tha answer is Invertebrates
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Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that
horrorfan [7]

The correct answer is - A) arthropods evolved before vertebrates did.

The arthropods have evolved much earlier than the vertebrates. They were on the scene millions of years before the earliest marine forms of the vertebrates. Because the arthropods were on the scene much earlier, they managed to use the newly formed suitable environment on the land. They were initially marine, but with only slight adaptations they were able to adapt to the terrestrial life.

Once the arthropods got out of the marine environment and started to take up the niches in the terrestrial environment, they experienced a real explosion in their evolution and diversification. They were the dominant land dwellers, and because of the lack of competition, as well as the higher levels of oxygen, they managed to reach pretty big sizes for their standards. Unfortunately for them, their brain capacity is limited to a very low level, so once the competition came on the scene, they were quickly pushed from the throne as the dominant terrestrial creatures.

7 0
3 years ago
PLEASE HELP ASAP!!!!!!!! BEST ANSWER GETS BRAINLIEST!!!!!!!!!!
Daniel [21]
Three examples would be gamma rays (usually these rays are emitted from unstable isotopes and can be used in nuclear experiments and testing) ultraviolent rays that are emitted from the sun and can cause sunburn and even skin cancer because the rays mutate the DNA in the skin cells nucleus. And also X-Rays, microwaves, and radio waves, which is usually harmless because it isn’t enough radiation to mutate DNA in our cells

I hope this is what you wanted
4 0
3 years ago
Which model shows a prokaryotic cell? a. I b. II c. III d. IV
Cloud [144]
You didn’t show the models but Prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Here is a picture. I hope it helps
6 0
3 years ago
If sperm and egg cells have half of the number of chromosomes found in other body cells, how do gametes form?
Pavel [41]
Cuz they combine during fertilization and since 2 halves = 1 whole, u get gametes w a full number of chromosomes
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Animals can adapt to changing environments by doing all of these things but one. That is A) changing their diet. B) reproducing
murzikaleks [220]
B- Reproducing more often. If the environment is not right for them then reproduction doesn’t help them adapt. They respond by changing behavior, moving to another area, and even modifying their physical bodies (diets included).
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2 years ago
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