Plant roots can grow through cracks and what?

Why is a frog's tongue anchored in the very front - opposite to the orientation and anchoring of humans?

Which statement below is false regarding ocean crust and continental crust? A: Ocean crust is more dense
B: Continental crust is composed of only igneous rocks
C: Ocean crust is younger
D: Continental crust is older

Mengapa tumbuhan dan hewan langka perlu dilestarikan agar tidak punah?

Suppose a person developed a mutation in a somatic cell which diminishes the performance of the body’s natural cell cycle control proteins. This mutation resulted in cancer yet, but was effectively treated with a cocktail of cancer-fighting techniques. Is it possible for this person’s future children to inherit this cancer causing mutation? Be specific when you explain why or why not.

Enviroment factors can influence natural selection because they can increase or decrease A) the number of chromosomes in an individual.
B) the number of chromosomes in a population.
C)the amount of genetic variation in an individual.
D) the amount of genetic variation in population.

Can some one help me please