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Mars2501 [29]
3 years ago
12

The end of the ordovician period was signaled by

Biology
1 answer:
eimsori [14]3 years ago
3 0
According to historical accounts, through the use of advancements in technologies like the carbon dating, it is roughly estimated by scientists that the Ordovician Period lasted only for 45 million years. The end of its era was theorised to had signalled when there was a mass extinction of the marine animals.
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An important challenge to traditional (pre-1860) ideas about species was the observation that seemingly dissimilar organisms suc
katen-ka-za [31]

Answer:

Dissimilar organisms might have evolved from a distant, common ancestor.

Explanation:

First of all we should know species. Species is considered as a basic unit of taxonomic classification of an organism.

Initially, the scientists are agreed on this phenomenon that all distinct species are evolved gradually from common ancestor. Today, the species which are different from each other just like hummingbirds, humans and whales are from the same ancestor but with the time passage genetic mutation occurs and at the end dissimilar organisms we can see in our environment/surroundings.

6 0
3 years ago
A red-tailed hawk swoops down and captures a young rabbit feeding on dandelions growing in a park. the relationship between the
Rudiy27
The hawk, a carnivore (animal meat-eater), is predating on the rabbit, an herbivore (plant-eater). So the hawk can be seen as the predator and the rabbit as the prey.
But another type of relationship important in Ecology is consumers. So producers are the plants that feed a food web. That makes the rabbits the primary consumers (herbivores) of these plants. Then the hawks become the secondary consumers (carnivores) of the primary consumers, by eating the herbivores.
Hope that this makes sense!
4 0
2 years ago
Which cycle involves a gas moving from the atmosphere moving directly into
Taya2010 [7]

Answer:

B. The carbon cycle

Explanation:

In the carbon cycle, carbon in the atmosphere is absorbed into plants, where the plants use photosynthesis to convert that carbon into oxygen and energy for themselves. Neither of the other cycles involves a plant taking in a gas directly from the atmosphere.

Hopefully this was helpful! :)

5 0
2 years ago
A ‘doe’ is what kind of animal?
Kitty [74]
A doe is a female deer.
7 0
3 years ago
House sparrows in the northern part of North America are larger than those found in the southern regions. Which mechanism of mic
svetlana [45]
House sparrows in the northern part of North America are larger than those found in the southern regions. The possible mechanism of microevolution is more likely to be responsible for this is natural selection. The answer would be letter B.
6 0
2 years ago
Read 2 more answers
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