false
Explanation:
The half-life of C-14 is shorter than that of U-238. Every radioactive isotope have their distinct and unique half-life.
- The half-life of an isotope is the time taken for half of the radioactive nuclei to disintegrate.
- The shorter the half-life, the faster an isotope decays.
- C-14 has an half life of 5700 years. It is used for dating archaeological materials.
- U-238 has an half life of 4.5 billion years. It has been used to date the age of the earth.
Half - life brainly.com/question/1695370
#learnwithBrainly
Answer:
Predators is an organism which can be described as the hunter who hunts for food. An d prey can be described as the organism on which the predator will feed.
Silversides can be described as small fishes which are very thin. They are usually found in fresh water or near the coastal areas.
The adaptation of the Jacks include :
- They attack the prey in herds.
Adaptations of silverside are:
- They have colour much transparent or like the colour of water which allows them to hide.
- They travel in groups.
Metamorphic. I looked up some rocks and I’m including the picture of it and it shows something similar to your picture and it says it’s a metamorphic rock.
Allopatric speciation, the most common form of speciation, occurs when populations of a species become geographically isolated. When populations become separated, gene flow between them ceases.
Answer:
Explanation:
(1) Remember that this occurred in a polylysine which consists only of L-Lys, the pKa of Lys residues might be different in polylysine as compared with the free amino acid in the solution.
The transition can also occur if more than 50% of the lysine residues need to be charged in order to ‘break’ the helix. Note that there is a 50:50 ratio of the coordinated bond of protons and dissociated forms.
(2) Other residues that are positively charged at neutral pH. They are arginine and histidine.
(3) Both arginine and histidine are more voluminous than Lys. Steric interference can prohibit the formation of an α-helices.