The answer is: “Whales are more efficient at gas exchange than humans which helps them conserve energy.”
The answer to the question given is letter D. The cones are diploid.
The true reproduction in a pine tree is its cones which are diploid. <span> Conifers has both male and female cones. Once the ovule is fertilized, a </span>diploid<span> sporophyte is produced, which gives rise to the </span><span>embryo.</span>
Answer:
Acid deposition represents the mix of air pollutants that deposit from the atmosphere leading to acidification of soils and freshwaters. ... Rainfall that is acidic, possesses elevated H+ ion concentrations, and has been commonly known as 'acid rain'.