Final answer:
True, warm-season turfgrasses have better salinity tolerance than cool-season types. Boreal forests are not dominated by deciduous trees; they mostly consist of coniferous trees. Grasslands typically have frequent forest fires that help maintain the ecological balance.
Step-by-step explanation:
True: As a whole, warm-season turfgrasses can tolerate salinity better than cool-season turfgrasses. Warm-season turfgrasses generally have adaptations that allow them to resist the stressful conditions of high salinity levels, which can be common in arid or coastal environments. Conversely, cool-season turfgrasses are often less tolerant of salinity and may experience decline when exposed to salty conditions.
When considering biomes and their characteristics, it's important to note that the statement "Boreal forests are dominated by deciduous trees" is false. Boreal forests, also known as taigas, are predominantly made up of coniferous trees. The claim that grasslands frequently experience forest fires is true; these fires can be a natural part of the ecosystem, helping to maintain ecological balance by controlling tree growth and recycling nutrients back into the soil.