Neutron number of element X-110
Explanation: 153(Proton+Neutron)-43(Proton)= 110
<span>The pulmonary vein is </span><span>the structure of the human heart which is a large vein that carries oxygenated blood from the lungs to the left atrium of the heart.</span>
Answer:
The water vascular system of echinoderms d functions in locomotion and feeding
Explanation:
The water vascular system of echinoderms is a hydraulic system and is an unusual organ system. Echinoderms have a distinct endoskeleton. The water vascular system is essentially a system of fluid-filled canals. It uses water pressure to mediate <em>movement and helps in feeding</em>. It also asists in respiratory, excretory, and some circulatory functions.
Answer:
top right
Explanation:
hot starts inhabit the left hand side of the diagram. Bright stars inhabit the top. luminous means bright so it would be top right.
In population genetics, directional selection is a mode of natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype