The answer to me is false. Hope this helps!!!
Answer:
These seed plants fall into two groups, angiosperms and gymnosperms. Angiosperms are the flowering plants. Their seeds develop inside a female reproductive part of the flower, called the ovary, which usually ripens into a protective FRUIT.
Explanation:
<span>Q1. Diamond, Q2. Diamond, Q3. The amount of light bending depends on angle and wavelength the light enters the substance and how dense the substance is, Q4. If the second substance is more dense than the first, the light ray bends towards the ‘normal’, if it’s less dense it bends away, Q5. In the swimming pool, when you look at a person’s body underwater they appear disjointed.</span>
Answer:
Question 1
D
Question 2
C
Question 3
D
Explanation:
1. An ecosystem is MOST likely to return to its original condition after Tall prairie grass burns after being struck by lightning.
Here is a research paper in which they explained how this happened. (Komarek, E. V. (1971). Lightning and fire ecology in Africa. In Tall Timbers Fire Ecology Conference (Vol. 11, pp. 473-509).)
2. In some national parks, controlled fires are maintained by firefighters. The major reasons for using controlled burns to maintain certain ecosystems is to give nonnative plants a chance to colonize the region.
A recent article provided the insight of this situation (Xanthopoulos, G., Delogu, G. M., Leone, V., Correia, F. J., & Magalhães, C. G. (2020). Firefighting approaches and extreme wildfires. In Extreme Wildfire Events and Disasters (pp. 117-132). Elsevier.)
3. One reason for the change in the Galápagos ecosystem has been the introduction of species that were not on the island before, such as donkeys, goats, cats, dogs, and insects. The introduction of nonnative species MOST likely disrupt the balance of life on the islands due to greater competition for limited food sources.
Scientist said that food competition is actually a struggle to survive in any ecosystem here is the reference paper (Eckhardt, R. C. (1972). Introduced plants and animals in the Galapagos Islands. Bioscience, 22(10), 585-590.)
Answer:
When analyzing data on the nitrogenous base content of the DNA of various species, the claims are supported by the data:
- <em>In any one species, the amount of adenine closely approximates that of thymine. </em>
- <em>In any one species, the amount of guanine closely approximates that of cytosine. </em>
- <em>The amounts of A, T, G, and C in DNA varies from species to species. </em>
<em>(options A, B and D)</em>
Explanation:
Organizing the data has to:
<u>Source of DNA A T G C </u>
Streptococcus 29.8 31.6 20.5 18.0
Yeast 31.3 32.9 18.7 17.1
Herring 27.8 27.5 22.2 22.6
Human 30.9 29.4 19.9 19.8
E. Coli 24.7 23.6 26.0 25.7
DNA is the molecule that contains the genetic information of each species, formed by sequences of nitrogenous bases Adenine, Thymine, Cytosine and Guanine.
Since Adenine and Thymine -as well as Cytosine and Guanina- are complementary, the percentage of them will be very similar in each DNA molecule.
The genetic information -which determines the physical and functional characteristics of each organism- is encoded in the DNA and is different for each species, so the percentages of nitrogenous bases vary from species to species.
