Beyond durability, cockroaches are built to play defense. They have an exoskeleton to protect their soft bodies, and will hide whenever they're in the process of molting their exoskeleton. The exoskeleton is not only rigid but flexible to allow the roach to crawl into tiny crevices. Their legs are built for running
Explanation:
Fracking is the introduction of substances into a formation in order to increase they pore pressure and to increase natural drive of hydrocarbons.
Fracking has several environmental issues associated with it;
- Fracking leads to air pollution in case of blowout of gas pressure in formations, particles and dusts can become blasted into the environment.
- Proppants in fluids channeled into formations can lead to ground water contamination.
- In areas where fracking is done, there might be an exposure to harmful chemicals.
- Destruction of the natural habitats of animals.
Answer:
The correct answer is option D. A and C.
Explanation:
Lymphoid tissue is the body part that is an essential part of the immune system that provides immune response against different infection or pathogens and protects from these foreign bodies. These tissues are present in all over the body that includes spleen, adenoids, tonsils, lymph nodes and other parts.
Lymphoid tissues or organs are the sites of the proliferation of the macrophages and lymphocytes. These structures also assist in furnishing surveillance points for lymphocytes and macrophages.
Thus, the correct answer is option D. A and C.
The correct answer for this question is this: "Species diversity measures the number of species in the biosphere, while genetic diversity measures the variety of genes in the biosphere, including genetic variation within species."
<span>Species diversity and genetic diversity are different in terms of what the two terms measure.</span>
Answer
Wind may be involved in the formation of sandstone arches by facilitating erosion which wore away exposed sections of rocks and enlarges the cracks on the surface forming marrow sandstone fins.
Explanation
Sandstone arches can be formed when a large piece of sandstone flaked off as a result of high winds. In addition to that, alternative frost and thawing can result into crumbling of porous sandstone which will in the long run cut through some fins. These resulting holes enlarge to form arches with effects of weathering and rock fall caused by wind.
