The collective fight is crucial for achieving SDGs due to the following reasons:
Shared Responsibility: Achieving SDGs requires global efforts as challenges like climate change, poverty, and health crises transcend borders.
Pooling Resources: Collaborative actions enable sharing financial, technological, and human resources, ensuring effective implementation of goals.
Addressing Inequities: Collective actions help address disparities in development, ensuring no country is left behind.
Global Stability: Tackling hunger, education, and health collectively leads to stability and peace worldwide.
Draw a rough sketch for the curve $y = 2 + |x + 1|$. Using integration, find the area of the region bounded by the curve $y = 2 + |x + 1|$, $x = -4$, $x = 3$, and $y = 0$.
Study the given molecular structure of double-stranded polynucleotide chain of DNA and answer the questions that follow. 
(a) How many phosphodiester bonds are present in the given double-stranded polynucleotide chain?
(b) How many base pairs are there in each helical turn of double helix structure of DNA? Also write the distance between a base pair in a helix.
(c) In addition to H-bonds, what confers additional stability to the helical structure of DNA?