If a child has blonde hair and both of her parents have brown hair, what does that tell you about the allele for blonde hair?

The blonde hair would be the recessive trait and both the parents must be heterozygous dominant.

For instance, let us consider B and b the alleles of the gene responsible for the color of the hairs.

B is the dominant allele which codes for the brown color whereas b is recessive allele which codes for blonde hairs.

The phenotype of both the parents is a brown color, that is, dominant trait. They genotype would be Bb.

The cross would produce offspring with three possible types of genotypes BB, Bb, and bb in the ratio 1:2:1.

The offspring with BB and Bb genotype would have brown hair color and the offspring with bb would have blonde hair color.

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.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.