Breathing in air pollutants can irritate your airways. It may cause shortness of breath, coughing, wheezing, asthma episodes and chest pain. Overtime, exposure to air pollution puts you at risk for lung cancer, heart attack/strokes, etc. Some people are more at risks from others though
Me and my friends think it is a hot plate
C is for question 1 and 2
<h2>
Answer:</h2><h2>Sclerenchyma</h2><h2 /><h2>AND </h2><h2 /><h2>Collenchyma</h2>
Explanation:
<h3>The tissue which provides support and mechanical strength to a plant or a growing organ in a plant is known as a mechanical tissue. </h3><h3>Both the ground tissues- collenchyma (living) and sclerenchyma (dead) provide maximum mechanical strength to a plant.</h3><h3>Collenchyma mainly provides mechanical strength to the growing plant parts.</h3><h3>The cell wall of collenchyma is made up of- pectin, hemicellulose, protein and cellulose. </h3><h3>These thickening materials get deposited at the corners or at the tangential walls of collenchyma cells.</h3><h3>It is a living cell which retains protoplasm even at maturity.</h3><h3>Due to the presence of hydrated pectin in the walls of collenchyma cells, they also provide elasticity to the cell.</h3><h3>Sclerenchyma is the tissue which makes the plant hard and stiff. Sclerenchyma is the supporting tissue in plants.</h3><h3>So, the correct answer is 'Sclerenchyma and Collenchyma'.</h3>
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring
