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Ket [755]
3 years ago
10

Can evolution by natural selection be witnessed and quantified?

Biology
2 answers:
madreJ [45]3 years ago
7 0
Yes it can be quantified
Oxana [17]3 years ago
4 0
No it cannot be witnessed as it happens over million of years and these changes only occur if they are beneficial for the survival of the species.
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What does the theory of evolution contribute to conservation biology?
Studentka2010 [4]
The theory of evolution provides a number of insights:

-it tells us how the species are related
-it tells us how the species and populations react to the changes in their environment

With this knowledge, the scientists can predict how the species will react to the potential changes and support the positive changes (provide a good environment for the animals for example) <span />
6 0
3 years ago
Fill in the blanks.
lbvjy [14]

1. Parasites

2. herbivores

3. phagocytosis

4. Plant

5. oxygen (O2)

6. gills

7. open

8. urea

9. Single-loop circulatory systems have one direction of blood flow. Typically in fish, oxygen is absorbed in the gills, flows in blood to the body organs, and back to the heart, which pumps it directly back to the gills. In double-loop circulatory systems, the heart has multiples of each chamber. Part of the heart pumps blood to the lungs, to get oxygen. This blood flows back to a different chamber where it then gets pumped to the body. Once its oxygen has been used up, it goes back to the heart to be pumped all over again to the lungs.

10. Freshwater animals have lower water and higher salt concentrations than the environment in their cells. This means water constantly tries to diffuse into the animals, which can bloat them. They have special cell processes that remove extra water.

pennfoster

5 0
3 years ago
1) Which of these is the significance of green plants to the ecosystem A. possess specialized sense organs B. are usually motile
stich3 [128]

Answer:

C. are autotrophic

Explanation:

Autotrophs are important in the ecosystem because they create their own food

7 0
2 years ago
Decomposers are also called? *<br> A. Herbivores<br> B. Carnivores<br> C. Consumers<br> D. Producers
Temka [501]

Answer:

The answer is C.

Explanation:

Decomposers feed on dead organisms like plants and animals.

7 0
3 years ago
Mammalian evolution began with the evolution of the first synapsids. What is the defining synapomorphy of synapsis?
Feliz [49]

Answer:

b. a single temporal fenestra

Explanation:

Synapsids have a temporary fossa in the lower part of the temporal bone. These reptiles mamiferoides only have a single inferior temporal fenestra.

The synapsids were the first amniots to diversify and appeared  in the middle of the Carboniferous. These first synapses were characterized by the presence of a single temporary fenestra behind each orbit, through which the mandibular muscles pass.

4 0
3 years ago
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