Answer:
Each base pair is formed from two complementary nucleotides (purine with pyrimidine) bound together by hydrogen bonds. The base pairs in DNA are adenine with thymine and cytosine with guanine.
Explanation:
After the collapse of its fuel tank, the Challenger itself remained momentarily intact, and actually continued moving upwards.
im guess thats wht ur asking i cant really understand ur question
The shuttle program resumed flights in 1988. After the Challenger wreckage was examined, most of the pieces were buried and sealed in abandoned Minuteman missile silos at Cape Canaveral Air Force Station, where they remain today. Challenger's explosion changed the space shuttle program in several ways.
thats more like it ig im not sure
Muscles constantly contract and relax to help fight gravity.<span>
</span>
The three last ice ages were in the periods between 450-420 mya, 360-260 mya, and 34 mya to present.
Explanation:
The ice caps on the poles, or at least one of them, form when there is a global cooling off. The temperatures drop across the planet, and that results in the poles and the surrounding areas to start freezing. As the ice spread, ice caps are formed. The ice caps can be limited only in the Arctic and Antarctic circle, but they can also move much further into the lower latitudes, all depending on the severity of the climate conditions.
- In the last 540 million years, the Earth has experienced three periods of global cooling, or ice age.
- The first of these periods was the Andean-Saharan ice age, lasting between 450 and 420 mya.
- The second has been the Karoo ice age, lasting staggering 100 million years, from 360 to 260 mya.
- The most recent is the Late Cenozoic ice age, starting from 34 mya and still going on, thus we are living in an ice age at the moment, just that we are not in a period of glaciation.
Learn more about global warming https://brainly.in/question/2057145 #learnwithBrainly
can affect neural, reproductive, immune and cardiovascular function
through air, water, food
pubmedncbinlmnihgov