Answer:
Protostars are difficult to observe because they are surrounded by cocoons of gas and dust.
Iran, Iraq, Saudi Arabia
These three countries fall in the desert area.
Answer:
IPM is an environment-based approach that emphasizes long-term pest reduction or harm through a blend of strategies such as biological control, habitat alteration, cultural practices adjustment, and the use of resistant varieties.
Explanation:
IPM is an environment-based approach that emphasizes long-term pest reduction or harm through a blend of strategies such as biological control, habitat alteration, cultural practices adjustment, and the use of resistant varieties.
6 major components which are common to every IPM programs:
1 ) Pest identification
2) Monitoring and assessment of the number of plagues and damage.
3) Guidelines for when management practice or action is required
4) Prevent pest problems
5) Use of a blend of tools for biological, cultural, physical/mechanical and chemical management
6) Assessment of the impact of pest control after action
Precambrian rocks<span> are mostly covered by rock systems of more recent origin, but where visible they commonly display evidence of having been altered by intense </span>metamorphism<span>. Precambrian rocks often occur in shields, which are large areas of relatively low elevation that form parts of continental masses.</span>
Seems very basic, the ocean is above the plate, the plate material is heavier than water (it being rock). That's pretty much all of it. The plates grind a little and new land pushes up at plate boundaries but this does not seem to be related. The heavier material is below and the lighter above, those being rock and water respectively.
