What does population density measure?

1. the different species in a community

2. the area occupied by a population

3. the number of individuals in a sample

4. the degree of crowding of a population

At places where earths plates meet, and deep places within the earths rock layers, the conditions are very hot. Where do you think the heat comes from

Identify the two types of global food food webs and describe how they are connected

A human embryo doesn't need the kind of yolk that is present in a chick embryo. Explain. It doesn't need any nourishment. It gets its nourishment from its mother. It can synthesize its own food.

An individual that is heterozygous for two linked genes has the genotype a b/a b, which means that the aand b alleles are in one chromosome and the a and b alleles in the homologous chromosome.

What remains constant

How are coal and oil similar?

Which distribution pattern in species can be considered the most easily measurable? A equal distribution B. sparse distribution C. local endemios D. migratory Reset Nest

I tend to have an inquiring mind, and i want to know more about how water moves within the plant body. i take a common houseplant and cut the stem off about 1 inch from the soil surface.

The cell theory states that

A person has been diagnosed with high blood pressure. a medication that can effectively serve to lower his blood pressure is one that: