In an ecosystem, which is NOT a density-

dependent limiting factor?

A) predation

B) parasitism

C) competition

D) natural disaster

What are common organic sedimentary rocks

All multicellular organisms begin as a single cell. within four or five days, the first cell multiplies into a ball-like structure of about 100 cells. what is this structure called?

Which are the smallest units of life? O cycles DNA molecules proteins cells

13. The allele that results in the absence of a tail is autosomal recessive. From which parent do dogs with no tail inherit this allele? a) Both parents b) Father only c) Mother only d) Neither parents

Which career in marine biology appeals to you the most? Explain the aspects of the job that you find appealing.

What is an abiotic factor of a marine ecosystem? A). Food produced B). Temperature change as you go deeper into the ocean C). Reproduction of animals

1. Suppose that xylem were located only in the roots and stems of a plant. Would fluids in the xylem still move? Explain.

What activity will decrease body temperature? Sweating Exercising Adding clothing Shivering

Organisms with true radial symmetry A. tend to be highly mobile. B. do not have a distinct head region and tend to be sedentary or passive drifters. C. can be divided into two matching halves along only one plane. D.

1. The Earth's carbon cycle consists of the flow, cycling, and recycling of all of the carbon on the Earth. Every living organism's composition includes the element carbon. How does carbon become part of living organisms?