There are a number of veins and arteries attaching to the heart. The superior and inferior vena connect to the right atrium, while the pulmonary veins connect to the left atrium. The pulmonary artery connects the right ventricle to the lungs, while the aorta connects the left ventricle to the body.
Energy from the sun is the primary source of energy on the earth. The energy from the sun reaches the earth through radiation. Solar radiation occurs over a wide range of wavelengths and frequencies. The region of electromagnetic energy distinguished by wavelengths and frequencies is called electromagnetic spectrum. The electromagnetic spectrum in order of increasing wavelengths include the following: gamma ray, X ray, ultraviolet ray, visible light, infra red ray, microwave and radio wave.
In a evolutionary or phylogenetic tree, the nodes represent common ancestral species of the descendants, which are represented by the tips of branches, arising from the nodes.
According to the given evolutionary tree, all organisms are evolved from a common ancestor, represented by the last node, which was present about 13 million years ago. Hence, the option 1). is correct.
The second last node is showing a common ancestor to gorilla, chimpanzee, bonobo, and human, which was evolved to different species about 6 million years ago. Hence, the option 3). is correct.
Thus, the correct options are 'option (1). and option (2).'