The correct option is D.
Transcription is the process by which the information in a DNA molecule is copied into an mRNA strand. Replication is the process by which two new strands of DNA are formed from a single parent DNA. Both the DNA and the RNA are composed of four different bases, three of the bases are the same while one is different for the DNA and RNA. It is only the RNA that has uracil while it is only the DNA that has thymine. Thus, Uracil is involved during the process of transcription since it is an mRNA strand that is formed while thymine is the one involved during the process of replication since it is a DNA molecule that is formed.<span />
The deer eat grass. Its droppings, which eventually decompose into the ground, provide minerals and vitamins to the plant roots. This food is vital for it so the plant remains alive and can produce oxygen which is essential for the deer and grass is also a food source for him too.
Answer:
A gyre is a large system of rotating ocean currents.
Together, these larger and more permanent currents make up the systems of currents known as gyres.
Explanation:
If a zebra mussel is discovered in a lake in Pennsylvania, then the ecologist would be worried because it is an invasive species. The zebra mussel is native to Ukraine and Russia, but if it has been found in Pennsylvania, than it means that it has been introduced in this area. As an invasive species, the zebra mussel can be very dangerous for the native species in the lake. The invasive species usually are more competitive for food sources than the native species, manage to reproduce quicker, bring in diseases, and the native species tend to not have defense mechanisms for them. This leads to rapid decline or even extinction in the native species, while the invasive spreads out quickly and takes over, resulting in dramatic change in the whole ecosystem.
Answer:
- Vitamin A (fat absorption/liver disorder): Dry skin (i.e. eczema)
- Vitamine B1 (thiamine deficiency): Beriberi (wet or dry)..wet affect heart/circulatory system, dry can cause heart failure
- Vitamin C (ascorbic acid): anemia, gum disease, skin problems, and scurvy
- Vitamin D (calcium): bone loss/density; i.e. Rickets where bones become soft and bendable
Mineral dificiency (when your body does not absord or obtain the required amount of intake)
- Iron (important for hemoglobin); low iron can cause anemia (causes you to feel weak or tired)
- calcium (important for strong bones/teeth, supports proper function for blood vessels, muscles, nerves, and hormones); Calcium deficiency disease is osteopenia (left untreated it leads to osteoporosis--usually in older adults)
Explanation: