Select all that apply: Which of the following affect (s) the half-life of a radioactive substance?

A. the type of isotope

B. the temperature of the substance

C. the addition of a catalyst

D. the mass of the substance

A species including only organisms that can reproduce

Two genera of birds exist side-by-side on an island. Genus A is characterized by a few species of similar, genetic material. Genus B contains different species of birds with a wide variety of genetic traits.

What is a mechanism that causes evolution by natural selection to result in imperfection?

Using credible sources, explain the environment and adaptations of ostriches to explain how they evolved to survive in their environment.

Which classification level is broadest than the kingdom level

Which characteristic of the male reproductive system is not variable among animal species that reproduce sexually?

Why the children in a family may have different genotype and phenotype than predicted by the punnet squre

What is meant by the term "chemically gated sodium channel"? Group of answer choices A membrane channel that opens when some chemical binds to it, allowing sodium to cross the cell membrane A membrane channel that opens when sodium binds to it,

Scientists now know how much carbon dioxide was present in the atmosphere as far back as 800,000 years ago. How did they obtain this data?

How do farmers contribute to water pollution?