Wave interference may occur when two waves that are traveling in opposite directions meet. The two waves pass through each other, and this affects their amplitude. Amplitude is the maximum distance the particles of the medium move from their resting positions when a wave passes through.
Ice has less density, which makes it float.
<span>Chemical reactions occur when different atoms and molecules combine together and spit apart. For example, if Carbon (C) is burnt in Oxygen (O2) to form Carbon Dioxide, a Chemical Reaction occurs.So, during chemical reactions, new product atoms are not created, and old reactant atoms are not destroyed. Atoms are rearranged as bonds are broken and formed. In all chemical reactions, mass is always conserved...In chemical reactions, atoms rearrange to form products. Hope I helped!</span>
DNA standard is like a control because it helps to identify the weight of the unknown samples run on electrophoresis gel. It helps to compare the bands of the unknown sample with its own band positions, and we can get the relative weight. DNA ladder consist of many bands whose sizes are known already, so that they can help to find the size of the sample DNA.
Also, a DNA ladder can't be altered during the process of running the DNA in electrophoresis gel.
Plants: roots; chordates: backbones. Both provided support to live on land
