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Korolek [52]
3 years ago
14

4. How are food webs different to

Biology
2 answers:
agasfer [191]3 years ago
7 0
A food web consists of many food chains. A food chain only follows just one path as animals find food. For example, a hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. A food web shows the many different paths plants and animals are connected. Food webs are more useful because they consist of many interconnected food chains and are more realistic representation of consumption relationships in ecosystems.
True [87]3 years ago
4 0

Answer:

Food webs are made up of food chains.

Explanation:

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The fossil record is testament to extinct fauna no longer present on Earth. Certain areas of the planet have always had high spe
prohojiy [21]

Answer: Option (1)

Explanation:

The extinction event played an important role in the creation of new diverse life forms on earth. After an extinction event, both globally and locally, more than 75% of animal species gets vanish and the only those highly resistant life supporting organisms survive and with due course of time, they undergoes evolution, thereby bringing changes to the existing life forms. This is how they initiates and helps in the increasing species diversity.

Thus, the correct answer is option (1).

7 0
3 years ago
Scientists build models based on what they know from previous research to derive testable hypotheses. Independently, both Watson
Trava [24]

Answer:

Nitrogenous bases contain the genetic information, their amount is variable among different species, and the arrangement of these bases is also variable among different species

Explanation:

Both Watson-Crick and Pauling's DNA models considered that DNA nitrogenous bases (i.e., Adenine, Cytosine, Thymine and Guanine) contain the genetic information that determines the characteristics of living organisms. Moreover, both DNA models also considered that nitrogenous base composition varies between species, as well as the arrangement of these bases in the DNA chain also varies between species. Based on these features, Linus Pauling considered that a model where nitrogenous bases would be arranged on the outside of the DNA molecule would be easier for the DNA molecule to be replicated, transcribed, or repaired. Although incorrect, Pauling's DNA triple helix model was fundamental to develop the helical (double-stranded) structure of DNA, which was finally discovered by Watson and Crick in 1953.

5 0
3 years ago
All nutrients in biological systems are _________
Allisa [31]
Pretty sure recycled
4 0
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When a true breeding plant with purple kernels was crossed with a true breeding plant with yellow kernels the f1 cob had kernels
rodikova [14]

Answer:

fffffefwefwefwefwefwefwef

Explanation:

fwefwefwefiowejfiwejflkfjsdkljfkldsjfsdkljfksdljf

8 0
3 years ago
The two main subdivisions of the peripheral nervous system (pns) are the _____ nervous system and the _____ nervous system.
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