Which statement best describes the earliest ancestors of plants?

A. They had no competition.

B. They were vascular.

C. They had seeds.

D. They lived in water.

What are 2 types of gene mutations?

During the process of chromosome replication, A genetic error occurs. As a result, a sequence of events occurs as described below. Event A. Protein with the new sequence of amino acids is produced.

Three components of a scientific argument

Which of the following is an example of an abiotic factor? a. A wind factor b. A duck c. A human d. A bacterium

Hydrogen bonds hold two strands of DNA together by forming between nitrogen bases. True or false? i say true need second opinion!

Which of the following is a prediction based on the cell theory that all organisms are made of cells, and all cells come from preexisting cells?1. If you boil nutrient broth and place it in an air-tight flask, cells will appear in the broth2.

During photosynthesis, the energy from sunlight is used to split water molecules. What happens to the hydrogen ions that are split from the water molecules?

Which part of a scientific argument must be supported by valid data

What is used as evidence for continental drift

Ocean floor rocks are. Continental rocks