Which is an example of how ecosystems on earth affect each other?

a. worms reproduce in soil in grassland ecosystems
b. deforestation of rain forests harms other ecosystems
c. lions get energy from the primary consumers they hunt
d. saguaro cacti can live in deserts, but not in grasslands

Y’all i need answers plss people are saying me and my brother look alike although we’re two different ages. one year apart i’m a girl, btw i’m thinking we could be fraternal twins idk my parents and my friends think we look alike

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.

Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. makes predictions