What does the rock and fossil represents?

A. Index fossil

B. Geologic time

C. The age of reptiles

D. The age of mammals

What is gene splicing used to produce

How does the muscular system work with the nervous system

The evolution of multicellularity in eukaryotes A. occurred independently in several eukaryotic lineages B. occurred only once, in the common ancestor of all eukaryotes C. occurred only once, in the common ancestor of all animals D.

In your own words, explain natural selection and include an example

In the majority of stars, the most common element is? Oxygen / Helium / Hydrogen / Sodium

In a food web, a bird eats plant-eating insects but also eats berries, where does the bird fit in the food web? a. both as a primary and secondary consumer b. as a primary consumer c. as a secondary consumer

In order to build the dipeptide, water was removed and smaller molecules were joined o make a larger molecule. What is the name of this chemical process?

Iodine solution is added to a cake solution. The color changes to purple. Based on this result, what biological molecules are present in the cake solution?

Glucocorticoids are steroid hormones that usually enhance the immune responses when an individual is suffering from severe stress. True or False

Which of the following is a living material that might be found in soil a air b algae c mineral or d silt