Although most changes in Earth's climate are caused by natural factors, scientists have observed changes that indicate human activity plays a
role too.
True
False

False

Explanation:

In Earth’s history before the Industrial Revolution, Earth’s climate changed due to natural causes not related to human activity. Most often, global climate has changed because of variations in sunlight. Tiny wobbles in Earth’s orbit altered when and where sunlight falls on Earth’s surface. Variations in the Sun itself have alternately increased and decreased the amount of solar energy reaching Earth. Volcanic eruptions have generated particles that reflect sunlight, brightening the planet and cooling the climate. Volcanic activity has also, in the deep past, increased greenhouse gases over millions of years, contributing to episodes of global warming.

An IgG antibody that specifically recognizes a protein of interest, p50, was used to isolate p50 from a whole‑cell lysate. The resulting protein mixture can undergo SDS-PAGE to separate p50 from IgG.

The molecular weight of p50 is 50 kDa,50 kDa, and the protein does not contain any cysteine residues. The molecular weight of IgG is 160 kDa.160 kDa. IgG contains two heavy chains and two light chains that weigh 50 kDa50 kDa and 25 kDa,25 kDa, respectively. Both types of chains contain cysteine residues.

here is the question

Select the components of the SDS‑PAGE loading buffer. (more than one)

bromophenol blue

dithiothreitol

glycerol

sodium dodecyl sulfate

sodium chloride

Explanation: