Why can the removel of one important species affect an entire ecosystem

Which of these is NOT a typical shape for a bacterial cell? A. rod B. spiral C. spherical D. all are typical bacterial shapes

Which statement best describes the process of asexual reproduction? A. A human baby is the result of a fertilized egg. B. A plant releases seeds into the air. C. A single-celled protist divides into two cells, and each one becomes another protist. D.

When was the last San Andreas earthquake

Which of the following are not properties of carbon? . It's very cohesive and adhesive. . It can form polymers like carbohydrates, lipids, proteins, and nucleic acids. . It can regulate temperature. .

Natural selection means A individuals that fit best into their environment survive to pass on their genes while individuals that are less fit die out. B Scientists can changes the genes of an animal with genetic engineering.

Wind can transport particles of many different sizes. What sized particles are probably carried the farthest by the wind?

A country that has been relatively poor is starting to become wealthier. This has brought many people into the capital city, causing the population to grow very rapidly.

An inactive gene inherited from an ancestor is an example of which kind of evidence for evolution? A. DNA B. fossil C. anatomical D. radiometric

Which choice is a biotic factor of an ecosystem soil air ants sun

Which of the following are necessary for a seed to germinate? 1. moisture content of seed must be at least 9% 2. Moisture content of the seed must be less than 9% 3. certain enzymes in the seed are activated 4. temperature must be above 80 degrees 5.