Which best describes a virus?

a. a single-celled organising

b. a microscopic thing with a nucleic acid code

c. a shell that surrounds a capsid

d. a living organism that attacks bacteria?

Quaking aspen can send out underground stems for asexual reproduction. sexual reproduction is not as common, but when it does happen, the haploid gametes have 19 chromosomes. how many chromosomes are in the cells of the underground stems?

What are the rules of writing a scientific name?

What is an example of an alternate path in the rock cycle

When a plant is attacked by a pathogen, it may respond by carrying out a defense that causes cell and tissue death near the infection site, restricting the spread of the pathogen. What is the name of this defense

Identify one general effect of overuse of an environmental resource.

How macromolecules are broken down and used to make new molecules.

How do soils form? A. Plants cement mineral particles together to form soil. B. Plants provide organic matter and minerals to make soil. C. Erosion transports mineral particles, and plants die and decay. D.

Give three examples of places bacteria live.

How can scientists learn from observations

The minimum amount of energy the body uses at complete rest is known as the energy balance. resting metabolic rate. metabolic balance. basal metabolic rate.