What field of study led to the Earth's many layers

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope?

Why are phytoplankton important to this ecosystem?

Atmospheric nitrogen has to be combined with other elements, or fixed, in order to be used by plants. Lightning is one way that nitrogen is fixed.

What is the effect of germination on the rate of cellular respiration in peas?

Name the two types of digestion, and describe how they are similar and different.

How many codons are contained in the mrna that is produced by the normal dna in model 1

Arrange the events involved in nuclear fusion in the correct order. 1. The colliding nuclei fuse to form larger helium atoms having two protons and two neutrons. 2. Bare nuclei collide with each other due to massive amounts of heat. 3.

In any dihybrid cross where both parents are heterozygous for both traits, what is the phenotypic ratio of the offspring? A) 1:1:1:1 B) 6:3:2:1 C) 9:3:3:1 D) 12:4:3:1

What feature of a disease classifies it as a prion disease?

He carrying capacity of an ecosystem for a particular species at a particular time is determined by