<span>''Science is the </span>study<span> of the </span>world around<span> us''.</span> The steps are explore, ask questions, and formulate a response to what your making and observation of.
Answer:
All chemical reactions involve energy.Energy is used to break bonds inreactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions releaseenergy. The law of conservation ofenergy states that matter cannot be created or destroyed.
The answer is : Metamorphic rock
Answer:
380
Explanation:
The mentioned double-stranded DNA has 80 thymine nucleotides. This means that this DNA duplex has a total of 80 adenine bases. Since thymine pairs with adenine, the number of thymine and adenine is equal in a double-stranded DNA. Similarly, the presence of a total of 110 guanine nucleotides in the DNA indicates the fact that it has a total of 110 cytosine nucleotides. So, total number of nucleotides in this DNA double helix would be= 80 A + 80 T + 110 G + 110 C= 80 + 80 + 110 + 110 = 380.
The question is incomplete as it does not have the options which are:
A. Soils saturated with water
B. Drier soils
C. Soils with lower mean temperatures
D. Soils with lower nitrogen
E. Soils with lower pH
Answer:
D. Soils with lower nitrogen
Explanation:
A cycad is a group of plants which belong to the gymnosperms or the plants which bear naked seeds.
The cycads show a characteristic feature that they form a symbiotic relationship with the nitrogen-fixing bacteria like the cyanobacteria and the <em>Anabaena cicadae</em>. These nitrogen-fixing bacteria live in the roots of the plants and convert the atmospheric nitrogen to the ammonia which can be used by the plants and the roots are called the coralloid roots.
If a mutation occurs in the gene of cycad which produces coralloid roots then the mutation will affect the survival of the plant as plants will not have enough nitrogen to be utilized and the soil with lower nitrogen content will also affect the survival of these mutated cycads.
Thus, Option-D is correct.
