Propose a pathway(s) to explain how the ectoderm and the notochord block the ability of the endoderm to express liver-specific genes during liver formation.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

wha is what i will use to get my free points

2%? i tried finding the exact sorry if it's not 100% correct ; -;

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.