Answer:
The North American Cactus and African Euphorbia species originated from two different, but similar plants.
Explanation:
These plants were the typical herbaceous species of the early Earth, characterised by their slim stems and large, wide leaves. However, their evolutionary paths began to change with the separation of the early supercontinents, Pangaea and Gondwana. As variations in the climate caused the development of harsh, arid, desert environments, both plant families experienced convergent evolution in order to adapt and survive. Cacti and Euphorbias both converged on similar forms and metabolisms after prolonged exposure to corresponding environments, due to the fact that similar biomes can require the same adaptations.
<em><u>Adaptations
</u></em>
- Branching Stems Covered In Longitudinal Ribs
- Smaller leaves And Short Spines
- Spreading, Shallow, Fibrous Root System
- Water Storage System - Succulent Stems
- Crassulacean Acid Metabolism
<em>Hope u will understand this</em>
The significance of carbon having four valence electrons is so that its outermost shell can form up to four covalent bonds.
CARBON AS AN ELEMENT:
- Carbon is an element with atomic number 6 on the periodic table. It belongs to group four. Carbon is said to be a unique element because its properties.
- One of those properties is its ability to form four covalent bonds with other atoms including itself.
- Carbon posseses four valence electrons and is ready to share each in a covalent bond with other atoms so that it can fill up its outermost shell.
Therefore, the significance of carbon having four valence electrons is so that its outermost shell can form up to four covalent bonds.
Learn more: brainly.com/question/9523675?referrer=searchResults
Answer:
The lunar calendar became the basis of the calendars of the ancient Chinese, Babylonians, Greeks, and Jews
Greek astronomers also devised rules for intercalations to coordinate the lunar and solar years. It is likely that the Roman republican calendar was based on the lunar calendar of the Greeks
Answer:
Hi, There!
<h2>Question</h2>
please define these words clearly: dependent variable, quantitative data and qualitative data
<h2>Answer</h2>
- Dependent Variable - a variable whose value depends on another variable
2. Qualitative data - Qualitative data is the descriptive and conceptual findings collected through questionnaires, interviews, or observation
3. Quantitative data is data expressing a certain quantity, amount or range.
<em />
<em>Have a Great day Ahead!</em>