Amphibians,reptiles,mammals and birds I hope that answers your question<span />
Answer:
control group
Explanation:
In manipulative studies, it is necessary to have an experimental group and a control group.
Answer:
Environmental hazards such as predators reduce the change if surviving into adulthood, Large amounts of gametes go unfertilised and wasted, Not guaranteed that sperm will come in contact with eggs, Greater chance of desiccation of gametes/zygotes.
Explanation:
Organisms can be UNICELLULAR where they are composed of only 1 cell or they can be MULTICELLULAR where they are composed of many cells. The first organisms to appear on earth where single celled and they developed the ability to photosynthesize and make food from inorganic compounds. UNICELLULAR organisms such as bacteria predates complex organisms that are Multi cellular
Answer:In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.
Explanation:
