Answer:
Biodiversity is the different types of living organism found in this earth. The biodiversity is getting extinct due to the natural and human calamity.
Habitat loss and fragmentation: The excessive loss of trees due to urbanization and deforestation, species has lost their habitat and become extinct.
Over-exploitation: The over-exploitation of the natural resources has directly result in the biodiversity loss of plants and animals.
Pollution: The different types of air pollution, water pollution and noise pollution has damaged the large number of organisms on earth.
Invasive species: The introduction of alien species in the environment can cause the deterioration of the original species inhabiting in the environment.
Mesophyll cells<span> (both palisade and spongy) are packed with chloroplasts, and this is where photosynthesis actually occurs. </span>Epidermis<span> also lines the lower area of the </span>leaf<span>(as does the </span>cuticle<span>). The </span>leaf<span> also has tiny holes within the </span>epidermis<span> called</span>stomata<span> (H-light green).</span>
After all this info you have given me, the correct one is Keystone species. As defined in sources like National Geographic, <span> These are types of plants or animals that play a unique and crucial role in the way an ecosystem functions. Without </span>keystone species<span>, the ecosystem would be dramatically different or cease to exist altogether. I hope this helps you a lot </span>
Answer:
Cd, Cr, Cu, Hg, Pb, and Zn