<span>it was molecular structure of DNA this was appeared 1n April 1953 Watson and Crick presented the structure of DNA- Helix.it carried the genetic information. the DNA Molecule shaped in twisted ladder.franklin produced an X- ray photograph.
DNA structure is made of molecules called nucleotide. Watson and crick also work on 3-D structure of DNA. this mark the history in molecular biology to understanding the genes control and genetic information.they also work on cell.they use stick and ball to understand to test their idea.</span>
More than one third of North American bird species can be found in wetlands. Wetlands may contains fresh or salt water or both. Biodiversity and nutrient levels are high; many plants and organisms filter out waste materials. Birds like geese, ducks, herons, warbies, and egrets, to name a few, use wetlands for nesting and feeding.
Answer:Hiking uphill.
Cycling more than 10 miles per hour or steeply uphill.
Swimming fast or lap swimming.
Dancing, fast dancing, and step aerobics.
Strength training.
Heavy gardening with digging, hoeing
Explanation:
For an activity to be vigorous, you need to work at 70 to 85 percent of your maximum heart rate, according to the American Heart Association. Examples of vigorous exercise include: running. cycling at 10 mph or faster
<h3><u>Answer;</u></h3>
Both use energy sources to create ATP
<h3><u>Explanation;</u></h3>
- Autotrophs and heterotrophs must use energy in the form of ATP to synthesize organic compounds.
- Autotrophs and heterotrophs are both living organisms that require some form of food to get energy.
- However, autotrophs make their own food via photosynthesis or some other similar method. Heterotrophs get their food by eating autotrophs or other heterotrophs.
The sphenoid bone<span> has been </span>called the 'keystone' of the cranial floor<span> because it is in contact with all of the other </span>cranial bones<span>.</span>
