embryonic phase
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embryonic period — the earliest period or phase of lung development in utero, lasting from the third week after conception to the sixth week; it is sometimes not named as a defined period of lung development, which is instead considered to begin with the following… … Medical dictionary
Chernobyl disaster — This article is about the 1986 nuclear plant accident in Ukraine. For other uses, see Chernobyl (disambiguation). Chernobyl disaster … Wikipedia
obligate lecithotrophic live bearer — a reproductive guild (q.v.) where eggs are fertilised internally and develop in the female until the end of the embryonic phase or later. There is no maternal foetal nutrient transfer (yolk provides food). There is some specialisation for… … Dictionary of ichthyology
postembryonic — /pohst em bree on ik, pohst em /, adj. occurring after the embryonic phase. [1890 95; POST + EMBRYONIC] * * * … Universalium
Innovation journalism — (Injo) is journalism covering innovation. It covers innovation processes and innovation (eco)systems. IntroductionInnovation is more than invention. An invention is something new, it can be done by a single person. Innovation is the introduction… … Wikipedia
Chernobyl disaster effects — The Chernobyl disaster triggered the release of substantial amounts of radiation into the atmosphere in the form of both particulate and gaseous radioisotopes. It is the most significant unintentional release of radiation into the environment to… … Wikipedia
eleutheroembryo — an embryonic phase starting with hatching and ending when most or all of the yolk is absorbed and the fish starts feeding, or until feeding on ovarian secretions ends at birth … Dictionary of ichthyology
biological development — Introduction the progressive changes in size, shape, and function during the life of an organism by which its genetic potentials (genotype) are translated into functioning mature systems (phenotype). Most modern philosophical outlooks would … Universalium
endocrine system, human — ▪ anatomy Introduction group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… … Universalium
reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… … Universalium
