In the US, it is estimated that the most frequently used mammals in biomedical research are: Group of answer choices Guinea pigs and Rabbits Cats and dogs Sheep and pigs Hamsters and Gerbils Mice and Rats

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids

Study the picture of the ocean. which is the best example of an organism’s niche shown in the picture? a. the environment contains several of the same species of coral. b. the shallow area of the ocean meets the needs of the coral and the fish. c. the ocean has fish and coral that live in the same area. d. the coral take in food from the water and provide shelter for the fish.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.